Capitalism, really, when it comes down it is just individuals being able to profit off of the things they create. GDP per person throughout almost all of history (thousands of years at least) was less than $2 per day. Capitalism came along where people could actually profit off what they create and now on average it's about 40/day.
If people can't profit off of things they won't innovate, and even if they did there is no market if people can't profit off it.
Very, very few by comparison. We have thousands of innovations every single day now. How many innovations can you name pre capitalism that had a major impact on society?
If people can't profit off of things they won't innovate, and even if they did there is no market if people can't profit off it.