Yes, done it many times.
FFVII convinced me to get a PS1.
Goldeneye convinced me to an N64.
Shenmue convinced me to get a Dreamcast.
The Bouncer (lmao) convinced me to get a PS2.
Halo convinced me to get an Xbox.
Halo 3 never came out at the launch of the 360 but I was convinced anyway.
PS3... er, it had no games and I bought one anyway because I was retarded. Worth it now, but nobody in their right mind would buy one at launch.
FFVII convinced me to get a PS1.
Goldeneye convinced me to an N64.
Shenmue convinced me to get a Dreamcast.
The Bouncer (lmao) convinced me to get a PS2.
Halo convinced me to get an Xbox.
Halo 3 never came out at the launch of the 360 but I was convinced anyway.
PS3... er, it had no games and I bought one anyway because I was retarded. Worth it now, but nobody in their right mind would buy one at launch.