For me it is necessary because the club needs quality players and coaches to provide trophies.
But sometimes it is the players who are inconsistent and there are also coaches who are not able to maximize the potential of the players they have. Having stable finances should be able to provide something more where the club can compete with other competitors in terms of winning the title.
But what happened was the opposite, Chelsea struggled to compete with other teams, even though at the end of the season the managed to make changes so that they finished in the top six of the standings.
That happened last season in the Chelsea team and whether Chelsea can get much better results next season, it seems that it is still quite difficult to say now because next season Chelsea will also be coached by a new coach with a composition of young players who should be better. But I don't know if Chelsea will be better or even worse because in the Premier League if there is a team that is less consistent in winning matches, the team will be left behind more easily and cannot become champions.