I think it's important to note that what you're talking about is bitcoin, not the blockchain or even cryptocurrency. No aspect of cryptocurrency or blockchain plays any part at all in your story.
The reason why you could do what you did is because you participated in a young, unregulated market. Blockchain added nothing.
Bitcoin is not possible without blockchain or 'cryptocurrency'. Thanks to these properties, it can't be truly regulated, which is a good thing in my book.
Of course, this breaktrhough opens a way to zillions of shitcoins, but they should simply be ignored.
Of course it can be regulated. Countries are working towards that already. It's already a taxable asset. Nothing about the blockchain makes bitcoin harder to regulate.
The reason why you could do what you did is because you participated in a young, unregulated market. Blockchain added nothing.