And as for commercially available, it seems all the good "professional/industrial" work tools (drills, etc) use LiFePO, even though it's bulkier and heavier (and probably explains why Milwaukee is so goddamned expensive).
But most EVs currently on the market have half that range. It's simply never going to be something people are willing to buy as a primary car (and most second cars are old primary cars that the family demotes to second car).
As for charge cycles, you could swap the batteries once in a while like you swap tires, if they are cheap enough.
LiFePO has the nice "doesn't blow up and catch fire" feature. Boosted Skateboards first generation used LiFePO, and worked great, but was expensive. So they switched to generic lithium-ion for the second generation. Their battery recall followed shortly thereafter.[1]
[1] https://www.cpsc.gov/Recalls/2017/boosted-recalls-electric-s...