Never said they do that to protect us, it’s to protect themselves and the publishers.
IIRC there were region restrictions but it was not enough

It’s not greed, it was scams and fraud.
They would love selling you games that sit idle in your inventory, but it created a secondary market for stolen accounts and allowed card thieves to extract money after buying and gifting on Steam.

Yes but the language ecosystem is a moving target

Forever? When every new python version breaks compatibility with the previous?