Depends on
- Licenses that survive an acquisition
- Formats a stranger can read without permission
- Funding that does not require growth to continue
- Maintainers paid before the crisis, not during it
Already true
Some of the most load-bearing code in the world is older than most of the companies using it, and is maintained by people who were never anyone's employee. The proof exists. What is missing is the habit of building that way on purpose.
Pick one tool you rely on daily. Find out who maintains it and how they are paid. That answer is the future arriving early or late.