Recovering lithium from batteries is not cost effective compared with mining new lithium. However, battery recycling is possible and still worth doing, because it recovers more valuable metals such as cobalt or copper.
And before recycling, reusing! This is why at https://gouach.com we've built the first easy-to-repair, easy-to-swap-cell battery! We're launching a Kickstarter soon, stay tuned (on our newsletter!)