I learned to walk in 1980. I search for "Commodore 63" and got this:
https://www.engadget.com/2017/09/29/...eases-in-2018/
We had a TI99/4A and my parents bought an XT in 1989. I learned some programming a year or two after that. It was weird to read the Wikipedia article on the C64, in 1989 it was mostly dead, but it was the major home computer for a few years?
Also, Commodore ruthlessly killed the TI99/4A, because apparently Commodore tried to sell calculators in the 1970s, and TI shut them down.
TI has sold the same calculators for ten or twenty years.
For the same price.
It sounds like as popular as the C64 was, and they sold it for nearly 15 years, nothing else they sold really caught on. When they stopped selling that, they went out of business.
Strangely, Wikipedia did not mention PCs until 1987, when they dominated.