I'm lucky I guess, I feel like the product team is on "my side" with respect to building a resilient system. They understand that bad architecture shows up as a fragmented and friction-full UX.
The demand for new features come from sales and executive people who want to check more boxes on a customer's checklist.
Ultimately your paycheck exists through deals that involve those boxes on checklists. It doesn't simply materialize out of thin air. If there are no deals, it doesn't matter how robust and elegant the architecture is.