Is the Xbox Series X repeating Sony's biggest mistake?

The Xbox Series X’s use of proprietary storage smells strongly of Sony's brilliant-but-doomed handhelds

Next Generation Playstation And Xbox Arrive : NPR

Sony's A95L looks great, but it baffles me the PS5-maker has repeated a key mistake for gamers

Sony is losing it: 6 reasons Xbox Series X will beat PS5 – Reader's Feature

I believe this is going to be Sony's biggest failure. They should've make another handheld like PsVita. But it should be compatible with regular SD cards. And should have Ps1-Ps2-Ps3-Psp and PsVita

Terrible Xbox Series X Announcement Has Fans Pissed! Sony Looks Great Compared To This!

Xbox Series X vs Sony PlayStation 5: performance, gaming, cost

Xbox Series X and S Review: Microsoft's New Consoles Are a Good Value. Is That Enough? - The New York Times

Microsoft vs FTC: Xbox Made a Mistake (And Sony Does too)

Xbox Boss Is a Big Fan of Sony's PS5 Controller