I think never. And even if they want to get back to the previous state, it will take them many years. And if you work well in the market without spending time on them, you can get double the profit. So I think it's kind of stupid to keep buying them.
Hey lot of numerous event has occurred to bitcoin previously even before the occurrence of Luna and FTX and yet bitcoin still gain new ATH, perhaps i don't think what just happened would likely hold down the price not to appreciate again. That is why the whales still getting larger and keeps controlling the market because they always utilizes every single opportunities by buying and holds, have it at back of your mind that nothing can ever stagnate or stationed the price of bitcoin at a particular spot, therefore its subjected to changes at any point in time (Increase or decrease).
The reason BTC price has dropped significantly is because it' manipulated by a lot of whales and they find it easy to drop when there's a news like FTX collapse. People will not easily sell their coins to panic unless there is a news supporting the panic which is exactly what these fails like LUNA, FTX, etc do.