You could say others who bought in later than you, but regardless I wouldn’t really classify that as “hard work”.

Third world Bitcoin miners, the energy it costs to run block chain math and transactions, and the harvesters of the materials of the hardware.

But in terms of capitalism, only 3 exploits is pretty low so I wouldn’t feel too bad about it, you’re no different than myself or anyone else existing with a computer, you just got a bit luckier.

(This is really only to point out that there are few businesses where exploitation cannot exist, namely those of small businesses, and even then, they exist in capitalism which bred the exploitation. That is to say, you just can’t get away from it. This is not a critique of you, and also, congratulations! That’s quite incredible :) )