All of these sweet summer children don’t remember FH3, where the “ultimate edition” didn’t even come with the expansions. It was just the base game and VIP.
That game cost a lot of money if you wanted the complete version and you bought it all not on sale.
Normally I’d criticise this kind of monetization, but not only does the base game have the best car list of any car game ever even without the expansion content, but adding cars to the game does have a cost that needs covering. I’d much, much, much prefer this to a “premium playlist” solution like other live service games do today.