SEGA has lost it's shine over the years, but IMO they are the greatest game company of all time. Their arcade output was STELLAR, their game dev teams were the most elite all through the mid 00's.
Seriously, look at their list of output. Just banger after banger. Not to mention their arcade hardware was top notch and was widely adopted.
Even though I haven't liked a lot by Sega in quite awhile, I really respect at how amenable they seem to be with fan projects, so much so that they hired one of the biggest Sonic hackers (Christian Whitehead) to make Sonic Mania. I'm sure Sega is aware of most of the fan projects (e.g. Sonic Robo Blast 2), and they seem to be somewhere between "not caring" and "supportive", which is pretty cool.
Sega also embraced emulation pretty early. I remember as a kid I had "Sega Smash Pack" on my PC, which used Kega Fusion, and on Steam I have "Sega Mega Drive & Genesis Classics", which is using vanilla Genesis ROMs that I believe you can load in virtually any emulator.
Compare this to Nintendo, who took down stuff like AM2R, and multiple Switch emulators.
Seriously, look at their list of output. Just banger after banger. Not to mention their arcade hardware was top notch and was widely adopted.
Rest in peace David! Thank you!