You're not the only who feels this way - in fact, many many forum discussions have focussed on this issue. It is quite simple however: The off-season is a managerial challenge. Depending on the league rank, a team will get a lot of arena income, a little income, or no arena income. As the season evolves, managers have to adapt the financial plans for their team, depending on which rank in the league table they expect. If 5th rank is to be expected - as happened to me last season - a manager needs to make a financial plan for how to survive this. A safe (but not very aggressive) strategy is to make your season budget on the assumption that you have 14 weeks of costs and 11 weeks of income, and calculate how high your weekly profit needs to be so that you can afford this. This is a managerial game, and users compete both on the basketball level and on the financial management of their teams.
Don't start with this again. You are trying to imply that 14 out of 16 teams in every Italian and Spanish league are going bankrupt every season. This is not the case. L2M.