It's been done and you can find a few examples if you look back far enough. The OG
Harem started by
ker in 22011 (funny to look back to 2011 /hgg times when "Harem" was a good enough name that wouldn't get confused with 15 other games) it had 8 years of constant updates then got abandoned in 2019. Afterwards it had several fan remakes that also got abandoned, surprisingly had
ker return after a 3 year hiatus, admit that after all he went through he didn't want to start remaking Harem solo with an 11-year old engine and finally resulted in
ker teaming up with Fylokon Games to give us the game we have today which is made in a new version of RPGMaker and Koikatsu and is getting regular updates which you can play here:
https://f95zone.to/threads/harem-rpg-remastered-4m1-1-fylokon-games.158499/
So yes it happens, but it's rare and comes with many downsides. Like the fact that in current oversaturated market a 13yo story feels generic and the fantasy wish-fullfilment harem game's been done to death in the meantime with much smoother gameplay and much higher-rez graphics. I still enjoy it but I admit a big part of why is the nostalgia.