Thank you for contacting Steam Support. In the unlikely event of the discontinuation of the Steam network, measures are in place to ensure that all users will continue to have access to their Steam games.
It seems like Valve wants us to think they have an EoL plan. With the goodwill they've built over the years, I want to believe them.
Someone actually emailed Valve about this back in 2013. Here's their response: https://i.imgur.com/4sa1Ln6.jpg
It seems like Valve wants us to think they have an EoL plan. With the goodwill they've built over the years, I want to believe them.