ATARI from the Jack Tramiel era, with the Jaguar console, showed that it wasn't enough to have the best hardware (it was the most powerful of its time).
You also need the games.
SEGA, with the DreamCast console, showed that it wasn't enough to have the best hardware (SONY was still at the PSX), it wasn't enough to have the best games (the lineup is legendary).
You also need the marketing.
SONY had the best marketing.
Lying after lies, each one bigger (*) than the last, in order to torpedo the growth of the DreamCast for more than a year, and then to make customers feel warm and fuzzy even though the PS2 had no game worthy of that name until two years after the launch.
(*) : "The PS2 will connect to high-speed networks"
DreamCast had integrated modem at launch, swappable ethernet adapter quickly after. Tons of online games available.
Quake III; Phatasy Star Online; Unreal Tournament was playable on VGA monitors, with mouse and keyboard, on LAN (ethernet) or internet with PC Players on common maps.
PS2 had NO NETWORK DEVICE built-in. You had to wait like two years to buy the Hard disk/ethernet port combo.Few games online.
(*): "It will do Toy Story graphics in real-time!"