On a serious note, Arsenals problems are mainly because of its owner. Kroenke buying the club in 2008 was the worst thing that happened to Arsenal. In this new era, you need money to succeed. An owner not willing to pump money to its club,
After saudis acquiring Newcastle, the premier league will have another club loaded with money. Arsenal is in danger to fall into unrelevancy in the coming years. Also failing to qualify for UCL is just accelerating Arsenals demise.
Well, only hope Arsenal have is if a better owner buys the club and invests in it. This aint going to happen in a while.