You just did not get it...
A team is not balanced. It grows every year.
It could grow money-wise, upon assets (Arena growth) or by player's value.
If a team grows 1M (for example) each year, than it will be 10M ahead of a new player who joined 10 seasons afterwards.
It will be unrealistic to close this gap.
Ok then take a closer look at my team to exercise it:
Player Salaries: $ 858 862 Attendance: $ 578 999
Staff Salaries: $ 71 061 Merchandise: $ 153 911
Scouting: $ 0 TV Contract: $ 212 953
Total: $ 929 923 Total: $ 945 863
Typical Weekly Net Income: $ 15 940
The attendance money, i had here could be a good average. My salaries are very low for my quality cause i had a very multiskilled team, which makes it cheap in salary but cost lot more when i buy it. Now you can say my team grows around 16 *14 Weeks + 400k(cup income) -> roughly 620k.
Lets take a look at some of my players:
(4595070) - i bought him fpr 7,3M and he is still one of the coolest PF in the Game, also becaused i trained him nearly all the time for the NT. If i sell him now, i will get most likely around 3-4M. If i buy a new one with his quality, and the old age, it will cost 6. But it was still a good investment, cause through his multiskill i would say a "normal" player with his skill would been more salary expensiv(that wuld mean oi burn money during the salarys cause my income is lower then my salarys)
(6019643) i paid 3,5 M, probadly would get 2,5M now.
etc.
You see here 2 things,on one hand my team declines cause i loose more money then i earn every season. Even with a salary you couldn't compete with my team, cause the rich team will spend money for more salary expensiv players instead of paying higher salaries during the week.
I actually planning to be succesful 2 additional seasons, cause the old dudes are getting better with their experience and i found a team which is hard to beat. But when i make a makeover then, my team will be significant weaker.