BTC can't do 100x or 1000x anymore.
ALT can. But which one?

actually, the system is not like that. maybe bitcoin can make big profits, but based on my experience, it takes a little longer.
Why do altcoins still exist today, because altcoins also have the potential to make big profits, and the price is cheaper. Altcoins are very suitable for people who have small capital and want to make short-term profits. I think each coin or token will have its own advantages, only the best is bitcoin.
Bitcoin is the best and most of the time the price of altcoins is based on the price of bitcoin. Now looking at the trend of the market you can understand that with the increase in the price of bitcoin the price of other altcoins besides Ethereum BNB is increasing. Altcoins are very challenging to scale up because it is difficult to hold the right coins.