I think it's totally reasonable to not want to go (back) to a process-driven organization -- that's why a lot of founders end up leaving, even before a 4 year vesting period is done, to go do other things.

Personally, I think you can optimize in hiring and picking your market to minimize the need for formal "process" or overhead as things grow. One amazing engineer requires much less process than a 10 person team. A consumer-focused product requires hiring a lot fewer salespeople than an enterprise/professional services company. Outsourcing non-core parts of your business, or choosing to live in high-margin smaller segments (e.g. licensing IP vs. owning a chip fab) can go a long way, too.

A $10b company is still probably going to need to have a certain number of employees, and thus a certain level of process, but I think it can vary by a couple orders of magnitude on each.