I don't even know what to say, mostly because the outcome is not predictable. I don't expect EA to fill the F1 games and others with microtransactions and lootbox mechanics the way they have for their other titles, because it doesn't really carry over that well to racing games. We aren't gonna get a F1 UT.
The thing that concerns me most is the possibility of EA trying to make their games more palatable to casuals by making the games lean more on being arcade and less on whatever aspects of sim/realism they portray well. All this while following the blueprint they have for other sports games where there is very little beyond roster updates every year and a slow drip of updates and added features long term.
One thing in our favour as fans is that racing games generally still seem to more heavily lean on the single player aspect to this day, compared to other genres, so perhaps this is less of a concern, as developers have to continue to enhance that experience in meaningful ways, or else no one will buy. Introducing MyTeam to F1 2020 seems to have reinvigorated the franchise, and definitely presented an opportunity to earn more revenue off cosmetic items, which I'm sure Codemasters had in mind the whole time.
This all to say that when microtransactions inevitable make their return, hopefully, they continue to compliment meaningful enhancements to the experience instead of replacing them.