because you played since season 6 (I play since season 5), and you know that level of V divisions increases a lot...but tv contract (except for the modific of season 11) remain the same, but salaries to win are more and more than season 6...so, as we can save money to stay in IV or III, new teams can't make it actually...so they leave...
In a large game world like Italy, at every level, teams don't make money anymore. Not only in D.V.
My league weekly revenue is negative and it has been for several seasons now. It used to be +20k or more.
Teams reach the team salary soft cap.
Obviously, it is going to be hard when you start in D.V but it is easier than before, because skills are cheaper and with more skills, it is easier to make a difference with a well-thought out distribution of skills.
And in higher leagues, teams have it more difficult to renew their roster and sometimes have to downgrade it if they have mismanaged. I see it happening around me. Newer teams catch them up.
It was harder for you to get out of D.V and escape demotion from D.IV than it is now.
Of course, it will always take several seasons to rise through two divisions, you can only expect this from this kind of game.
You did it, you have achieved more than me.