There was some rivalry between Sony and Sega for sure because the PS1 was extremely successful but Sony was not "blamed" for killing Sega. They didn't do anything. The market decided.This is so hilariously wrong. PS2 killing dreamcast (and thus Sony killing Sega) has been in the gaming lexicon for about 2 decades now.
The Dreamcast was already dying long before the PS2 came out over a year later. Stop hanging out with the brainwashed Xbox cultists and check your dates. It was already too late.
That's the real truth but they would rather blame Sony. Sony is always the enemy.EA killed Dreamcast