Agreed, for example today I went to withdraw tokens from a bot and it said "you must buy a power booster first". Well, their power boosters have a start price point of around $8 (1.5 TON with the current price of ton it becomes 8 dollars). Which doesn't seem very much, but I imagine how many people may pay them and what they're doing in their withdrawals (maybe it's a ponzi scheme, eh?)
It boils down to the trust for the project - it's not big of an amount if everybody will get something out of it in the future.
These funds can be used either for the future or just to get a quick buck, we will never know.
Some use TON fees to get the NFTs on the blockchain and to pay rent for them, usually for a year or two (that would be ~0,12-0.13 TON, but it depends).