Could it be a money thing? Let’s say they did release a battery that went 5000 charge cycles instead of 500 and had the same or better charge and discharge characteristics. If people by less batteries then it’s less money. Most companies want something to have a finite life so you spend more money.

Kinda like the pharmaceutical companies, healthy people don’t buy medicine. Why cure something that gets billions a year in research money

I only bring this up because we had some pretty cool stuff in the military that won’t see the light of day in the civilian market for a very long time. No one will believe me anyway and it’s probably best but I’ll throw it out there. They have a backpack not overly heavy that a soldier can wear. And it will wirelessly transmit electricity. For so many miles around. And you can power your computers GPS whatever you need with it. Works great in Afghanistan mountain to mountain. It’s mostly your specialty units that have them. Your regular guys wont But in the civilian science they say they hadn’t perfected wireless electricity. It’s been perfected for a very long time ever since Tesla first did it. But military science is kept separate from civilian science. The batteries everyone wants are already invented guarantee it