Investing is work. You have to spend time researching different opportunities, and even then there is still a risk involved.

If you made money by buying bitcoin a long time ago, you didn't get something for nothing. And if you sell it now, you can profit before the game of musical chairs collapses. So there is a limited window of arbitrage.

A little bit of work multiplied by a lot of risk and time.

It’s closer to speculation than investing.

Also it didn’t require any real work, just blind faith or forgetting that you even had bitcoin to begin with for a while.