I always hear the argument for capitalism "B bb BUT people won't innovate without the profit motive" WRONG
Humans want to solve problems, create, and innovate, they do not need money to motivate them. Cavemen were painting art 20,000 years ago without the desire of money.
True scientists like Tesla, he didn't care about money it was about the pursuit of science.
Capitalism does not cause innovation, most new technology is found by government programs like nasa (internet, smartphones, etc)
Most of the time, what you say is true. But there are also people who innovate their technology in order to gain more popularity which would generate investors and that the opportunity for them to earn money. So in other words, not all people innovate for the sake of improvement but for monetary aspects as well.