counter strike is a completely different game than half life. it's been sold as a separate game for decades. just because they share a former history doesnt mean anyone who is interested in counter strike is interested in this new half life game. i'd say its almost completely opposite userbases. one more hard core competitive multiplayer fps, the other casual single player VR. VR is an incredibly small market and i totally agree this is a game targeted at a tiny audience
Counterstrike and TF both started as half life mods.
This is going to expand the market vastly because it will make it much cheaper to develop quality VR games. In a couple of years, I predict the average purchase of this game will be to play the mods rather than the core game.