They got out because of consecutive failures in the NA market (Saturn, Dreamcast). The end of the Genesis wasn't exactly spectacular either with the failed attachments like the 32X.
Yeah I never meant to get so many, but I picked up each one after the first on the cheap. 2 were goodwill grabs. One had no av or power cord but had a game with it and a controller and vmu for $5 and the other goodwill one had all hook-ups, 2 controllers and a vmu for $6.
I have 4 PS2s and 2 PS3s and 2 PSPS and those are the only other duplicate consoles I have.