I had a Dreamcast .Well ,in fact I have 4 Dreamcasts right now .When I bought it I thought maybe it was a transitory console until the PS2 and the new Nintendo came .Seeing as it was a great machine I appreciated a lot the Dreamcast and I bought a lot of games for it .THey were very good and fairly priced .And then ,when things looked rosier than ever (the sales were increasing due to the price cut ,the megagames as Shenmue were arriving and there was lots of games announced ) Sega announced it was out of the business and that in some months it would cease the production .
It was very sad .Still the next year great software came (Skies of Arcadia ,Grandia II ,Shenmue II ,Virtua Tennis 2 ,Headhunter ,Sonic 2 ,Craxy Taxi 2 ,Rez ,etc ) .
What killed the Dreamcast wasnt Sony ,but the failures of the Sega-DC ,32X and Saturn ,added with some key errors as not including DVD and the ease to pirate it .