Playstation
-PS3 was a huge risk that destroyed whatever money made by PS1 and PS2
-PSN took far too long to recover from the hacking in 2011
-Poor marketing of games, Vita etc.
Nintendo
-Tries ideas that are too radical and likely not to get decent 3rd party supports
-lacks key 3rd parties titles found on Xbox and Playstation
-Focuses far too much on Mario to bring success for it's hardware
Xbox
-Focus on non-gaming aspects of it's consoles
-Introduced idea of charging for online and made it acceptable
-lacks a good range of 1st party IP's (mostly FPS or Racers)
Xbox Series, PS5 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch 2 will outsell the PS5 by 2030
