Portals main mechanic is movement, portals are created to enable new venues of movement. If portals were simply point at somewhere and click to teleport there the game would hardly be portal anymore and probably not fun at all.

Yes, I have played Portal and think that there is still enough movement involved to be problematic for VR as it's done now.

Sure, you could invent a teleportation-specific genre, but I think it'd be quite the niche.

Have Valve/etc gone after the hardcore F1/racing market? I have various friends who follow F1 closely and generally have money to spend. Surely VR works well for seated-racing games.