At point I can't but agree. I don't give a shit about Tesla anymore. It doesn't matter what "his" machines can do. His endgame is clearly a to have a complete controlled monopoly without any complications like "worker's rights" to stop him.
As long as you understand the terms of your agreement with Steam as a platform, everything is fine. Physical media for games are outdated anyway, especially with frequent updates, patches, and DLC releases. Regarding older titles that are no longer supported, well, as the saying goes: "If buying isn't owing..."
What a madman.