In my opinion other top teams who ought to have challenge Man City for the title were all shadow of former self with exception of Arsenal, I expected teams like Man Utd, Chelsea, Liverpool and Tottenham to give Man City a run of their money unfortunately they couldn't live up many fans expectations, though I give credit to Guardiola for putting up a formidable squad despite selling some his quality players at the beginning of season yet against all odds clinched the league title for four consecutive time thus breaking a record in EPL, well the season is gone, however I believe other top teams would boost their squad and sign quality players for next season so as to stop Man City winning another title.
Arsenal was in a better position to challenge Manchester city to win the premier league title this season, they were in a better position to getting that done but they weren't calculative enough to know crucial games and handle them as such rather it felt like they did treated every game like the same at a point in time until they were just few Weeks to the end of the season they took every game serious knowing about their rival.
Arsenal had games that would have kept them at advantage even before the last few weeks of the title race, if they had won one of their fixtures against Aton villa I'm sure Manchester city wouldn't have had much advantage over arsenal because Arsenal would have been ahead of them with a good number of point such that they would have been able to maintain their pase and get to win the trophy, winning Aston villa would have kept Arsenal at an extra two points advantage to winning the title but then they lost to Aston villa and that affected them in the long run.
Another way Arsenal would have been able to have the chance to winning the league title would have been through Manchester united been able to draw against Manchester city, that would have kept Manchester city at a two points handicapped which would have been balanced by goal difference by Arsenal and rhst way they would have been at the advantage of winning the league title because Arsenal had more goals.