In a scenario where the ROI isn't correspondingly worthing to the risk taking with funds then it could get boring for a lot of persons, who would look into others innovative alternatives.
That would already be an intermediate scenario: "Boring & Poorly adopted".
It is indeed the scenario I consider the most negative one for Bitcoin (a scenario not very different of many altcoins'), and that's why it would be very important to slowly advance into the "payment tool" / "currency" field.
And @slapper, you nailed the dilemma:
Volatility does not go down just because we wish it would. It either requires massive market cap (we're talking orders of magnitude greater), or actual velocity as currency. And currency adoption on a massive scale requires stability first and foremost. It's circular.
The scenario that could work is the following one:
- More people adopt Bitcoin, still for speculation but with a little bit less risk, once volatility becomes a little bit more predictable. I'd talk here about a state when for 5 years (i.e. longer than the past "cycles"), in no year it has lost more than 50%.
- They slowly start to spend it. Merchants could play a role here because they could prefer a Bitcoin (e.g. via Lightning) with 0.1% fee and 10 seconds confirmation to a credit card system with 3-6% fees and (final) confirmations of several days. So merchants who are brave enough to withstand the volatility could offer discounts for Bitcoin payers, and then customers could follow.
This could then start the "circle" or "spiral" into the currency adoption -> more stability process.
And as you wrote, we could "land" in a "boring & poorly adopted" scenario (see above) if this process doesn't happen.
The "stronger hands" thing, I am skeptical. Institutions aren't stronger hands, they're different hands with different incentives. They are able to increase volatility just as easily through derivatives and leverage. We saw this with every asset class that was financialized.
I'm divided about this. If we can conclude something regarding the last 2 years' influence of institutional investors, it seems that short term volatility is still as high as ever, but longer terms become quieter. For example, we had neither a +30% crash nor a +50% bull in a single month.