Why do some games on Steam require Origin/EA-App and some do not?

I was wondering what's the reasoning behind the fact taht you can buy some games like Dead Space Remake or Dragon Age Veilguard on Steam and are not required to use an additional launcher (Origin/EA-App). But other games, even some without multiplayer components like for example Mass Effect Legendary Edition, DO NEED to be connected to the EA Launcher which is necessary to launch the game.

I'm looking into Mass Effect Legendary Edition in particular here. I'd like to buy it on Steam and play through the games again, but since the EA-App isn't the greatest (to put it very mildly) I don't want to deal with it when I buy the game on Steam. It seems very odd to have such a requirement that is obviously keeping some players away from buying the game (or other games with the same issue). And also: is there a chance this will get removed eventually so I'd be able to launch a title like MELE directly in Steam just like the Dead Space Remake?

I know a CM probably can't answer this but I'd really like to get an answer from someone at EA. I'm personally interested in a "better solution" but I'm also interested in it from a business perspective because this requirement is hurting sales and doesn't make sense to me at all. I know quite a few people who are not buying any games on Steam that require a 3rd party launcher (not limited to EA) but they happily buy games that don't need one. And I'm just talking about laptop/desktop PC players - I'm sure people who use handhelds like Steam Deck and such are even more hesistant and avoid these kind of games that may not even launch on their handheld devices because of issues with 3rd party launchers.