If I have 50K USD in Bitcoin, why would I want to sell my Bitcoin? What I am trying to say is that why would I purchase 50K USD worth of Bitcoin in the first place when I do not plan to invest them? One logical answer would be that I mine these Bitcoin during its early days.
Well, if I purchase those Bitcoin I will not invest all of them at once. I will hold a little portion of it and invest the other portion. Probably around 30K USD to create a gambling site (provided my country allows - which is not the case for me) because it is a very profitable niche in the cryptocurrency world. As I said I am not allowed to create gambling site, so my next option will be mining as it is still somewhat profitable. Wait, my country electricity fees is very high, my profit from mining is as low as dust every month ... Then I might consider to hold these Bitcoin and wait for the price to grow.
If I mined those 50K USD worth of Bitcoin then I may exchange a large portion to fiat and then start a mining farm. The left over might go into some small online business such as eShop etc.
Can you make a solid return with a mining farm, like 10%+ return?