Hey, I'm nearing the end of my rope too. Started with the company when it was small (5 people), spent tons of time building processes, tooling, training, management systems, etc.
Now the owners want to be "more corporate" and are trying to cut me out without ever understanding what it is I've done for them in the first place (or honestly, what we even do at all).
Sadly they've paid me enough that leaving will hurt and I have dependents.