> The debate will shift from is bitcoin needed/useful to are altcoins needed/useful? Interesting times ahead.
And the answer is "no." Though as they say, the market can potentially stay irrational for longer than you (in this case, I) can stay solvent. So what you are describing could happen for a while.
> The $10,000,000 per bitcoin notion will be gradually diffused into other coins, and there'll be winners and losers, and it'll get ugly as blockchains are attacked, pump and dumps, powerful people takes sides, and misinformation put out.
And those are the reasons that bitcoin is literally always going to be better as a means of trade and store of value. Those coins don't have any advantages but they have all the disadvantages you mentioned. The more widley used/mined/liquid bitcoin is, the more advantage it has. And I don't mean social network effects, I mean the things you are talking about.