Heavily depends on the rate of adoption, protocol improvements, and advances in tech. Maybe crypto will always be a niche thing then it won't need to scale how we think. Who knows? I do know Seraphis starts making layers possible on Monero. I just really don't like how ecash is not self-custodial. That's a major pillar of Bitcoin and we are back to banks. Otherwise I wouldn't have a problem with it if there was a way to do it without trusting a third party.

Good talk with ArticMine on scaling Monero:

Bitcoin to me is a concept that spawned all these iterations of cryptocurrencies. BTC is just one of these and all these other cryptos are speciations that will live and die. Almost like an organism evolving and finding niches in the market. We probably won't recognize most major cryptos 15 years from now.

I think crypto will diverge into two major camps as time progresses: RegFi (captured, regulated systems - a failure of the original goal) and DarkFi (anti-fragile, underground, and heavy use of cryptography for anonymity and privacy)