Depends. Many still reflect the founders vision; even if that vision might have evolved over time.

Can you provide an example of that for an American venture backed corporation older than a decade?

Not the person you're replying to, and I may be wrong about this, but Amazon?

Jeff's original vision was "relentless customer focus" and ...

actually on second thought I'm seeing the argument 'Amazon stopped caring about customers and is in full enshittification mode at this point'.

But maybe Amazon circa ~2010/2015, or Google around 2010 was still pretty close to the original vision of customer service/organizing the world's information.

Or Apple? They're still making nice computers, although not sure they count as VC backed.

Stripe perhaps? Hashicorp?

Well Google‘s vision was to catalog all the world’s data

Apple wanted to make personal computing stable - they were absolutely VC backed

I suppose the original question is vague enough that it could always encompass everything which is founders vision even if the vision changes so it’s like OK well then then there’s nothing really to say that you’re stable too it’s just some whatever the function of the person who started the organization is and even that you could debate