Many PvP games do it too. It just is disruptive to the core gameplay.
but most other PvP games players are not huge in size, like 15x21x5 meters for a small siderwinder up to 192x111x33 for a Cutter or 168x87x28 for a Corvette... it will take some time to move through one of these ships...
Most PvP games have human sized avatars,
But World of Tanks do appear to have collisions enabled... and tanks a fair bit bigger than a human...
Same with World of Warships, that have even bigger things for us to control...
so when you player representation in the game is small, is far less disruptive to remove player collisions, but as your player representation gets bigger, issues related to the increased size crop up more and more.
I have yet to see any real argument for how this is going to work without breaking the game or allow abuse of the mechanics.