And, of course, there are lots of real businesses with real business activity that might be a sensible investment.
Can you name one please?
Not without it looking like I was suggesting people invest in it, which I'm not willing to do. But I will say that none of those businesses, even the ones related to Bitcoin, can take bitcoins as an investment in any way other than selling them for USD. You can invest in bitcoins, but there aren't really any sensible investments denominated in bitcoins to my knowledge. The currency is just too volatile right now.