How hard would it be to release it digitally first and allow people that pre-ordered it to downoad it for free if they wished for it? (probably a mess since that would mean a lot of back-and-forth with amazing, best buy, all european stores etc)
It'd be a mess setting up a global release of the biggest game of the generation while all your staff in every country in the world are under different amounts of lockdown and stores are shut and you can't do any kind of effective marketing beyond Facebook ads. They
could just drop the game digitally but that would be underselling an absolute massive release that they've presumably pumped untold amounts of funding into so far.
Sony will have thousands of staff across the world working on a huge global entertainment release like this. That's a nightmare if they're all at home trying to deal with this over Zoom. It's alright if it's Predator Hunting Grounds but this is bigger.
A game like TLOU2 will have a ginormous marketing roll out. It's a mainstream game - it's not aimed solely at people who log into the PSN store everyday. You flush all of that away if you rush release it. It needs in-store promo, billboards, cinema ads, etc. It needs big press review events, fan events (remember all of those around the Death Stranding launch?). I can totally see why they'd want to hold off and see what the lay of the land is as this all changes.