Profits like from the good old times will - percentage-wise - not happen again, I think. There is simply a cap on the market cap somewhere. You just have to look at the market capitalization of BTC now and put it in relation to the market capitalization of large companies or gold, for example.

There is also the question of what "significant" profits are. I think it is very likely that BTC will perform better than the stock market ... But I don't think we will see a x3000 anymore