Guess what, none of Prem clubs would also be able to make a move for Neymar, Mbappe, Felix next season with any ease. If you speak of our policy then you should know we have never gone for the best/world class option on market, but taken the alternate route that hasn't cost us millions less, but has proven to be a shrewd purchase and their value has gone up.
Last 2 years buying is a concern, and I will admit to that, but to expect that we somehow turn into Liverpool and produce a sale of 160m like they did for Coutinho to be able to get the best from market, that is unreasonable. But a possible 20m compared to 2m (practically free) we got for Tosin won't change our transfer policy in who we go to buy, neither would sales like this help us.
Saying building a team of 50-60m players.. But the volume of 50-60m players is not equivalent to those at other clubs. Look at the signings and squad quality of PSG outside of Neymar and Mbappe. Icardi is the next highest purchase of around 50m odd, they have relied on utility players aged 27+ to help them fix gaps in the team. Just for comparison sake. Also no sale of note, yet bought Mbappe and Neymar in 1 window (even if you count the loan with obligation payment structures and what not).
If we wanted one of Neymar or Mbappe or someone we would have gone and got them. If you think the current sales are stopping us from buying one of those profile of players then that is genuinely a wrong idea you've taken.