I agree on some level. I think the income-generation point is fundamental to what Buffett and similar value-investors look for. They will never touch an asset that doesn't have a long track record of producing positive cash flow. Things like Bitcoin and Gold are useless to them because all you can do is watch it (unless, of course, you are aware of how to leverage them to generate cash flow like locking up ETH in CDPs).
This industry is young and it will take a while for the "titans" of industry to jump in. Like you said, they play a rigged game and they will look for a way to rig this game before even dipping their toes in.
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