They are at least publishing some nicher titles with EA Originals. I'm also not entirely convinced that DiRT is more niche than for example Madden, which is a series of sports games about a sport that is really only popular in one country.
Madden is one of the better selling game franchise of all time with over 130 million copies sold. Despite this years Madden game being by far the worst reviewed Madden game in ages, it's still the 3rd highest selling game this year.
Globally or in the US?
So, yes, mostly in the US.
I used to work on Madden. Maybe this is non-obvious if you're not in the US, but it is hard to understate what a monumental cash cow that product is. It is like Excel is to Microsoft. It's a veritable firehose of money.
> really only popular in one country.
Sure, but that country has the third largest population in the world, and a greater GDP than the next two countries combined.
Dirt Rally, the rally sim, definitely is a smaller niche and the only one of its genre still under active development.
The rest of the Dirt series, which don't AFAIK share the physics engine with Dirt Rally, is much more mainstream.
Although I can't guess what the market size is for a racing game these days.