Yes, lots of research and anecdotal evidence, and easy to find:

https://hbr.org/2018/07/research-the-average-age-of-a-succes...

https://www.businessinsider.com/companies-started-middle-age...

Unless you have physical or mental disabilities brought on by aging, I don't see how your age would have anything to do with it. Either you can build a successful business or you can't. Since prior experience and connections and accumulated skills will play into that, you have some advantages over someone half your age.

I will turn 62 this year, and I'm enjoying the most lucrative and interesting stage of my long career in software. Other than the ham-fisted age discrimination people our age might encounter at job interviews I don't see any impediments.