I don't think that was how it happened at all. Acclaim sucked at making ports so they lost their rights to certain key games that made them rich, therefore costing them their bread and butter. It had nothing to do with putting games on the Genesis.
Namco stated they went with Playstation over N64 because of Nintendo's "bully" tactics. Capcom gave MORE support to Saturn than Genesis, and that system BOMBED out the door.
No sir, I do not think it was as you stated at all. In fact Midway and Acclaim did NOT give SEGA *MORE* support, SNES had EVERY game that Genesis got. They usually, with MK being the only exception, put the better versions on SNES.
I distinctly remember Square Also NOT making a single game for the Genesis. In fact they didn't switch to PS because of sales, it was due to size constraints involving cartridges.
Nintendo easily had the better support going in and it had NOTHING to do with Genesis sales, it had EVERYTHING to do with
1.) Success of NES convinced most people SNES would also be a success, and
2.) Exclusive Contracts devs had with Nintendo.
Capcom, Namco *AND* Konomi all said they would have supported Genesis more based on it's success, had Nintendo allowed them to earlier on.
We know that Sony paid Namco for their loyalty in the PS1 era, and again based on the massive success of PS3, Namco stuck with the money maker.
Capcom was the exact opposite of ALL your examples. As soon as their contracts with Nintendo was up, Saturn and PS got their full support, N64 got what 2, 3 games tops from them? N64 outsold Saturn in every region from day one. Then let's see Capcom went on to offer again more support for the doomed-from-the-start Dreamcast, this time Namco jumped on the bandwagon and EA, who had a habit of putting games on *ALL* systems decided to skip the DC because they "lost faith" in Sega due to their excessive hardware offerings.
Now according to the logic devs always go where the market leader is, why oh why did DC and Saturn get as much support as they did? Especially from Capcom (also one of GC biggest supporters not to mention the Wii too)
So it does go back to, 3rd parties don't always follow the market leader and their is a logical reason for that line of thinking.
Take Capcom, they wanted to make Mega Man 8 on the PS1, Sony said NO Way because it was 2-d, Capcom said fine and went to Sega, then Sony said ok here put it on PS1.
Now perhaps Capcom, and other devs who supported Sega, did so because of lack of competition. Think of it like this, EA, Midway, Namco, Konomi, etc, all jumped ship and left Saturn in the dust after sales dropped, but Capcom kept giving it support, as did Activision but that's a different story. Maybe their logic was if nobody else is making games for Saturn, they would have less competition for those who had bought a Saturn and weren't ready to abandon ship. This logic could also be why Activision and Capcom continued to support GC even after everyone else jumped ship to Xbox and Ps2.
But we could all be wrong and there *IS* some anti-Nintendo conspiracy going on and the world will end tomorrow.