That's the same as CoH1, you always end up teching to vehicles. That's really not a problem in CoH2. The balance of the vehicles are maybe, but the general aim of the game is to tech up to tanks and roll over your opponent with a coordinated attack.
I mean what else are you going to tech up to? There is no bought veterancy anymore, which was a crock of shit anyway, so thats a good thing, the game is WW2, the strongest vehicles on the Battlefield were tanks, it's only fitting that the end game should be tank focused.
In CoH1 you can use fuel to get BARs to improve your existing army, or a fast M8, or even WSC or Tank Depot. Yes, you usually end up with both BARs and M8, but what you got first can decide the game.
The counter on the Wehrmacht side is bought vet vs T3/T4. It's the same story, improve your existing stuff or get new things out.
Yeah you always end up with vehicles, but it's how you got there that matters.
Right now there is only one path to late-game.