Just Copy some discuss from other forum…
1:Smaller Blockchain networks with CPU-based PoW algorithms may not last for long if they don’t provide active development and innovation.
2:The key for long lasting potential though, in my opinion is the potential for mainstream appeal - there is already infrastructure - people already got rigs and laptops with reasonably powerful CPUs and all they need is some crypto with enough potential for them to want to mine it.
3: If people continue to demand these cryptocurrencies, they’ll be largely successful in the long run.