The simple fact of using the word "citizens" instead of people sounds awfully dystopian to me.
Unfortunately, most people want a frictionless experience, they want to click the "Sign in with Google" button and never think about it again, the moment you have to register manually, even with an email and password, fetch a client from GitHub/GitLab, or worse create a wallet and understand cryptographic keys, 90+% of the population gives up.
It doesn't mean people are stupid, humans just evolved to pick the path of least resistance when it came to foraging for food, same principle applies to modern life.
Yeah, since Valve is not public the odds of the next head being an outside hire or some loud tech exec are extremely low.
GabeN is most likely to pick someone who's been around with the company since the early days, like Erik Johnson or Scott Lynch.
If he wants it to stay in the family, his own son Gray could take over, he's also a game dev.
Gabe has often expressed distrust of publicly traded markets, a plausible outcome is that his ownership gets converted into an employee-owned trust or a collective buyback, this would effectively permanently lock Valve into its current profile, distributing profils back into salaries and bonuses for the staff.
The only one that lets me keep in my library, download and install at any time games that were delisted 10 or 15 years ago by their publishers.
For that reason alone, they deserve my money over any other storefront.

I'm definitely writing that down for my next super scrabble with proper nouns at grandma's.