Not all players got this banner, especially players from countries where they cannot sign up for PSN accounts.
They never should have allowed sales in countries where people cannot legally sign up for a PSN account. Especially when they allowed those players to play for months and are now "banning" them, preventing them from playing the game they paid for.
In addition, literally the only place where this requirement was stated was the steam sale page - the EULA had no mention of the PSN account, Sony's webpage explicitly stated you did not require an account to play playstation games on PC.
They never should have allowed sales in countries where people cannot legally sign up for a PSN account. Especially when they allowed those players to play for months and are now "banning" them, preventing them from playing the game they paid for.
In addition, literally the only place where this requirement was stated was the steam sale page - the EULA had no mention of the PSN account, Sony's webpage explicitly stated you did not require an account to play playstation games on PC.