The consoles that existed in the 70s and 80s were largely justified in being specialized hardware specifically for realtime rendering which had no realistic application outside the narrow scope of fixed function realtime interactive rendering they produced. In the 90s the PS1, N64, and Dreamcast were all computer adjacent with the next geration - PS2 / Gamecube / Xbox - all being perfectly functional general purpose computers that were simply crippled with proprietary software into being toys.
Since then their hardware has only gotten more generic and general purpose and the degree of their draconian platform lockdown grown to an insane degree to resist emulation and unlocking. Its a shame Valve only ever saw SteamOS as a hedge against Microsoft - if they had taken it seriously and put in the legitimate ridiculous amount of money it would have taken to breakout a console platform without the horrifying amount of proprietary bullshit going into the competitions products we might have seen that incredible amount of waste become as taboo as it deserves to be.
Honestly the worst offender is the Nintendo Switch - it is verbatim just the successor device to the Nvidia Shield Tablet, just with a grotesque proprietary operating environment and impenetrably locked bootloader. Every time I see one of those things I am struck by how absurdly wasteful it is to see someone carrying that thing and a regular tablet when Nintendo, Sony, and Microsoft could all just be shipping their own proprietary DRM laden store apps on top of a freedom respecting software foundation. If you want to exploit people by depriving software freedoms while they pay you for it... I'd argue its a product of propagandized deception and manipulation, but its still people considered informed consumers buying that garbage. Its a lot less bad than entire computers, fit for a multitude of purposes, being reduced to toys.