It won't be government supplied. You'll buy a basic terminal from some big tech company, and then subscribe to a plan that will grant you access to remote processing, memory, and cloud storage. Think Google Stadia but for everything. Using a computer will be more like using, say, the PlayStation store. You won't be able to install whatever you like - only what is made available. Piracy or adblocking will be impossible. Privacy and anonymity will become things of the past. Even news and information will be curated. And you'll have to keep paying for it all in perpetuity, while being tracked and forced to consume manipulative, targeted advertising.

Alternately, perhaps we can look forward to

You'll be happy to rent the megacorporation owned and configured computers whether you like it or not.