This prediction by elites like them can further increase Bitcoin's Dominance, which may lead to the existence of altcoins in the future. What is your opinion on this?
Not really.
Altcoins serve their purpose as the alternative toys the traders (more like gamblers) use to make some money in the altcoin market. As long as this is their only purpose they will remain like this.
If some day the developers stop thinking about ways they can get rich and start innovating (like what Satoshi did) is the day that their product will become independent of bitcoin and will stop being used
only for trading on exchanges.
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You make a lot of sense, but I remain convinced that bitcoin is better off not being the only crypto.
Bitcoin itself needs things other than currencies to buy, we all saw how pizzas and alpaca socks and so on were helpful for example.
As far as being alternatives to bitcoin, fiats are particularly shitty shitcoins, I am loath to seriously "trade", particularly in a "market making" fashion, bitcoin versus fiat because for gosh sakes fiat is total crap designed and intended to deliberately lose value, so if I build bitcoin's buy-sides out of fiats I am committing to holding, long enough to reside as buy offers on trading venues, horrible massively-lossy shitcurrency.
So for buy-side-building alone it seems extremely useful and valuable to me to have some other alternative-to-fiat than bitcoin to build buy-sides (buy offers) for bitcoin with...
-MarkM-