As far as Gateway-Amiga goes they wanted to make Amiga into a viable x86 platform way back in the 90s, using the Amiga ideal to power a totally new computer platform. The Amiga community (or at least a large part of it) blindly insisted they stick to PowerPC, which was too expensive and was outside the areas Gateway wanted to explore (being a x86 PC maker). I think in the end Gateway gave up and basically told the community to shove it, mostly out of frustration at not being able to push the Amiga platform forward. It could have lead to great things - Gateway have a large leverage in the PC industry and could have put up a decent fight.
BZZZT. FWIW, Gateway were at least interested enough to have a separate division holding their Amiga IP, to put Jim Collas in charge, etc etc. They also had an early start at the multimedia computer concept that had bombed, but were still trying. What came out later in court (unfortunately I have lost the referral URL) is that :madashell: M$ pressured GW to drop the pursuit of the Amiga on threat of having their Windows license revoked or made more expensive, and GW knuckled under.
I'm not claiming that the Amiga "community" were easy to please or to work with, because many of "us" considered it a badge of honor to NOT be working on the x86 platform, even though many of its worst qualities had been redesigned out by then. It would have ended up being a boutique OS running on commodity hardware with maybe a dongle or some such. Gee, where is the Mac now, sound familiar?