The only reason I got into Nintendo in 1988 was because Atari lost all of their luster.
The only reason I ever got into PlayStation was because the N64 didn't have anything worth playing that I didn't already own in 1997.
The only reason I ever got into Sega was because the PS2 was impossible to find in the year 2000.
The only reason I got into Xbox in 2007 was because PS1 and PS2 broke all the damn time and I didn't want to spend $600 on a company that had a history of being defective (little did I know...).
But in every instance that I tried a new company, I was blown away by his awesome the hardware and library was. From that point on, I bought everything they made.