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.
Although the FTTX thing has nothing to do with Bitcoin, I think the clearest and simplest explanation is that people sometimes the same investors took advantage of this fall in FTX to short Bitcoin and thus get Bitcoin much cheaper by taking advantage of this bug, it's something that cannot be denied, however people have to learn the lesson that FTX has nothing to do with the Bitcoin market, only that the market should be seen as a jungle where you know how to take advantage of what you have with the possible eventualities of life and what is presented, each one will look for a win-win way, regardless of the fundamental that is presented.