Your argument loses steam when you mention Man U
They are not financially ni the same boat as chelsea or man city, yet have beat them to the title. they have not been in Chelsea's league financially for yrs, yet have won the league 3 times out of 4
In what respect not the same league?
United and Chelsea were until City the two richest clubs in the league by some distance - United's turnover was the highest and their wages were 30% + higher than anybody else's apart from Chelsea.
Their spend on transfers did not have to be high - if you have a good squad, maintaining that squad with a player here and there is far less expensive than building one from scratch - - this season with Neville, Scholes, VDS and Giggs all on the decline - this summer they will spend big - Ferguson has tried to replace these players over time on the cheap and for me got it wrong over the last few years - Kuscak and Foster, Bardsley and Brown, the twins, Hargreaves, Anderson.............he's now reverted to type and tried to spend big to guarantee quality
because times up - so De gea for a british transfer fee for a keeper , Jones for a british record transfer fee for a teenager, Young for ott money etc - and he can do all that because unfortunately they are in the same league as Chelsea they can effectively pay what they want for who they want and enter bidding wars - City may of course change that.