Same same. But different. But still same – why?

Lend a token, borrow a token. Swap borrowed token for no matter. Pay again borrowed token later (with curiosity) to get authentic token again (with curiosity/rewards)

Or

Stake a token, get a liquid model of staked token. Swap liquid staking token for no matter. BUT. Now my staking place is gone, I'm now not incomes curiosity on my sol or getting rewards with whomever I staked with.

If I lose my Msol receipt, marinade is like "what staked sol?"

If I lose my borrowed Usdc reciept, Solend is like "Im maintaining receipts"

Lucy, s'plain please.