The problem sounds more like "how do I deliver quality code when 95% of companies out there do not see quality as an objective, oversell poorly made PoCs, do no

The problem sounds more like "how do I deliver quality code when 95% of companies out there do not see quality as an objective, oversell poorly made PoCs, do not give space and resources for design and engineering, and pushback on any refactoring?" The answer is very simple: you don't.