The home computer boom of the 70's and early 80's was the product of cheap microprocessors entering the market in the 1970's (chiefly the 6502 and Z80). In some cases it was scrappy startups (e.g. Apple) and in others it was an attempt to get in on the gold rush. There were no "standards" yet; IBM had yet to enter the fray, and when it finally did in 1981 it was still way too expensive for most of the home market, so wasn't really a factor for years.
So the way to think about this period is like the Internet boom of the late 90's or the AI gold rush of today. Things got greenlit because no one quite knew what would be successful (frankly, most companies/people struggled to find a use for the 8 bit machines besides gaming, which is a hard sell to a lot of parents). The quirkiness of the architectures is a direct result of the industry being the Wild West. You wouldn't see it today because the industry has been established.
Not sure it was hard sell. The computers were expensive but people knew they are the future. Parents who could afford it would buy it for the kids just to have access to the computers without knowing what good they are for.
Maybe if they were rich, but computers were bordering on new-car expensive in the 80s, and were indeed a hard sell for most working-class American families. Even something as basic as a Commodore 64 could cost you a few hundred dollars, and that was before the accessories got involved in it -- some of which you needed if you wanted to save programs or run commercial software. Some parents could be swayed by the computer's educational value in teaching things like math, reading, grammar, and geography, hence the glut of edutainment titles available for the early 8-bit machines. But even in the affluent town where I grew up, very few of us kids actually had computers.
The real winners of the home-computer revolution were the ones who knew how to cut costs effectively, companies like Commodore and Sinclair, in order to grow the market -- and the market only really grew once component prices started falling once the 80s were underway.
My family was... a little different. My father, a mechanical engineer, actually had a use for computers in the home: when the force and mechanical advantage calculations on your novel engine design became too complex for programmable calculators, a more powerful desktop computer was just the tool needed. He got me a VIC-20, and later a TI-99/4A, so I would keep my grubby mitts off his expensive Tandy business machine.
So the way to think about this period is like the Internet boom of the late 90's or the AI gold rush of today. Things got greenlit because no one quite knew what would be successful (frankly, most companies/people struggled to find a use for the 8 bit machines besides gaming, which is a hard sell to a lot of parents). The quirkiness of the architectures is a direct result of the industry being the Wild West. You wouldn't see it today because the industry has been established.