If there isn't a diversity of commodity suppliers of the best ASICs, then there are obviosuly actors for whom it is not prohobitive if a motive exists. Such actors exist even if there is such a diversity, really; the assumption has really always been that no one will have both the capacity and the motivatiom for carrying out a 51% attack.

No, it's not! It's almost happened in the past - Google it. The rapid adoption and deployment of ASICs around subsidized or cheap electricity makes it relatively straightforward for anyone with real resources to pull it off.

> Gold is a fancy paperweight that's impractical to use

Bitcoin (the core blockchain) can only process about seven transactions per second. Don't tell me gold is impractical!

> I have been using bitcoin since shortly after it's inception

Yes, and that's the only reason you seem to able to believe these things. Tell me, what can you ACTUALLY buy with Bitcoin without requiring a conversion to fiat currency under the hood? It's not just for tax reasons, it's because it's an awful store of value and would be disastrous for any modern, long-lead supply chain to rely on.

> If you can't see it too bad.

What I see is a "currency" with such terrible liquidity and deflationary properties that Trump is planning to sell off the US gold reserve to pay out these "Bitcoin billionaires" who would otherwise be totally screwed.