Odd comparison.
Because the 30 planes in FS2020 are super shallow out of the box. They share the same avionics for the most part and are depicted incorrectly in many aspects, flight dynamics and system wise. I would glady swap those 30 planes for just 5 well modelled ones.
A top tier DCS study sim like the Hornet will cost just the same for FS2020. Also, DCS is completey FREE to play and offers two aircraft, missions and a campaign along with a powerful editor.
So I think it’s classic apples and oranges here.
Let’s not forget however that we can enjoy boths sims equally. 