

While true that originally it also meant “balance” (in late latin we later got the word bilanx for scales - literally two plates), lb is for latin libra, and it was an actual specific weight (with a corresponding economical value in the Roman as coin) in use since the Roman republic, and it has remained in use for more than two millennia all over the world (with slighly different values depending on time and place, but usually between 350-450grams). It’s not an accident the the UK pound stirling coin still has the same L shaped symbol £, same as the italian lira, etc










UHD Blu-rays go up to 100GB so that covers many games, for more than that it’d have to be a digital download I guess
The PlayStation 3 was the first console to use (standard) Blu-rays, 20 years ago :) some people argued it was cheaper than dedicated BD players, many used it to watch movies.