Honestly, I think they got a laaaarger part of money coming from beam.tech, with BMW and the like. They know that they have the most friendly relationship with players, compared to other studios, so there's no need for them to add DLC's : the community is growing at the point of over shadowing both FORZA HORIZON 4 AND 5. And they don't want to play dangerously either, counting too much on the fans dedication. And the fact that they prefer having a small team of enthusiastics, instead of dead pan workers that are doing overtime, can only improve futher the devs legacy. Plus there's a car named "Pigeon". Nobody ever did that before.
Not really update speculation, but would like to congratulate @daniel-w on becoming a member of the BeamNG team
Yes gongrats @daniel-w ! Good job in whatever you did that got you the job! I am now automatically following you.