I became an Amiga user starting in the mid-1980s and my recollection was that even by the time of the introduction of the 500 and 2000 (my Amiga 2000 is still sitting downstairs in the basement on a shelf next to my 1000) Amiga was already well behind the PC and Macintosh in terms of users by the mid-to-late 80s.

It was a hobby programmer's platform because it had become a hobby. Like the Saab of computers (I also owned a Saab).

Somewhere to play games and write demos in the evening after having spent all day at work in MPW or Turbo Pascal.

It is impossible to know, due to obfuscation and (honestly) lying, how many Amigas were ever sold but it was somewhere between 3-7 million in total for all models worldwide from birth to death.

Ahoy tried to figure it out- Nobody Knows How Many Amigas Commodore Sold: https://www.youtube.com/watch?v=AXCWYKSjHnI

The Amiga's adoring fans were/are extremely vocal, but comparatively few in numbers.

Users often also had to become hobby programmers because the market was so small and they had to write their own programs to implement software that was unavailable on the platform- this was the case with me.

In the US, at least. Europe, Germany in particular, was probably a different story.

I imagine BeOS (Damn, I'm a winner in picking niche OSes) had the highest ever percentage of hobby programmers because EVERYBODY other than GoBe was a hobbyist on that platform.