Even as Bitcoin (BTC-USD) ETFs reach record inflow rates and continually edge against all-time highs, some investors—institutional and otherwise—don’t see the “asset class” worth buying for a long-term investment. Vanguard Group execs, for example, see Bitcoin as too speculative and not worthy of consideration for a buy-and-hold style portfolio; that’s why we haven’t yet seen Vanguard offer their own Bitcoin ETF and likely never will. But that isn’t to say there’s no solid investment opportunity to capitali ...