It went wrong when Wenger became unsackable and was able to run the club into the ground without taking any accountability

I’d say around dein leaving, gazidis coming In and Kroenke. They just basically let Wenger run every aspect of the club, no one stepped in and guided with a vision when we started going backwards with Wenger, and just took for granted we’d always get top 4 without having to keep improving the team or thought of where we want to end up as a club. They were way too much just leave it to Wenger to sort. The ownership lacked ambition to win trophies, just top 4 but did noting to counter balance other clubs catching us up. In football if you’re don’t have an ambition to get to the top, you’re always in danger of being caught up and going backwards, and that’s what happened

Now with Wenger gone, they still have plan or idea where we’re going, or how to solve it. Wenger had to go, but the club had no idea what to do. I think even if Wenger kept winning then retired, with this board we’d still end up in a mess and go backwards because they would have no idea how to run a club well, as the whole time they’d have let Wenger do it all while they count the money

Can't really single out a particular moment over the past 15 years. But I think it all started going downhill the moment the club started believing they were cleverer than the transfer market. Cleverer than everybody else in the football world.

I work in construction. And there's developers who will blow their budgets on fancy fixtures and finishes, only to skimp out on off-brand rebar steel and equipment from dodgy 3rd world companies. With obvious results.

But it's not the end of the world. The club has had lean times before.

Nothing went wrong. Arsenal simply returned to normality, their normal level. And has been normal for Arsenal ever since

I realized something wasn't right when Wenger seemed happy to allow Fabregas to come to us after the player himself made it clear re-joining Arsenal was his 1st choice. And I was surprised how many Arsenal fans thought it was the right call at the time I have to say.

It told me so much about where Wenger's mindset was at the time. Yes you had Carzola who was doing a great job (before the injuries) + some promising young players, but I knew at the time if Fabregas joined you that summer you were winning the league & I think his performances that season proved me right, 20 assists or something stupid! Fabregas (as captain), Carzola, Sanchez (coming with Cesc/a ready made understanding), Ozil & Giroud linking it all together at the top? If that clicked no-one was stopping you that year.

Where before I knew Wenger liked his projects & took pride in his way of operating, that call let me know he was obsessed with it. That he'd rather claim the kudos of winning the PL/CL his way (if it ever happened again) than simply having the best squad & winning them that way.

whoever is giving cedric a 5 year deal needs sacking

It "went wrong" when - after his players received around 60 red cards in his first 5 seasons - Mr Wenger asked his team of thugs to stop battering opponents and play 'the victim' instead - usually through simulation.

Once other managers saw that AFC could only batter or dive their way to sucess they became easily to unravel.

The rest is history

David Dein left. He was very powerful in domestic football and apparently had enemies. There were rumours that once he left people thin in power wanted to get back for the power he and Arsenal had so stitched us up and still do. Things like supporting Mike Riley as the head of the refs association and he hates Arsenal. Hence the dodgy decisions against us.

What went so wrong was Wenger and Gazidis misjudged the financial situation. As Gazadis said, arsenal kept a significant amounts of funds ‘dry’ instead of investing in the team. Not long after that city joined the likes of Chelsea and spent big. All of a sudden Arsenal’s dry war chest was undercut, and the money we had aside couldn’t buy us anything near what we required. Player contracts were left to run down, we sold players for peanuts and recruitment hasn’t been up to par.

It is like Arsenal genuinely believed, to such an extent that they based their business model on it, that billionaire owners would pack it in, sell their stakes, call in loans etc., big fat back fire

Where did it go wrong? Same as us, really. Football's usually dead simple, the team with best players generally wins the league. We haven't had that since Fergie left, you haven't had that for god knows how long.