It's a big deal because it's highly anticipated and we knew nothing about the games, has nothing to do with competition. There's also the fact that the source code for both GTA V and GTA VI are now both out there somewhere which is fucking CATASTROPHIC for Rockstar/Take-Two. This means that GTA V can be reverse-engineered/hacked/modded to fucking oblivion on even current-gen consoles once tools are made and there's fuck all that can be done to stop it really. It also means that whatever trade secrets are within that source codes can be used or sold by someone else to legit bootleg or sabotage their games. An active game/cashcow like GTA V/Online having this problem is like the apocalypse to them. And then an unreleased AAA blockbuster game having this issue now? Sheeeeeeeesh. It's literally worst case scenario, scorched earth type shit for a gaming company. Source Code and a dev build leak are a huge deal.