Your post confirms my point. The arrogance of those working in this industry knows no bounds. It is nothing against you personally. That is simply the culture of the software industry. "We know what is best for your industry, by God, and if you don't believe it, you are an idiot." This mindset is commonplace.
If a software company can truly focus on customization to meet the needs of a specific customer or even an industry and not be so content on the take it or leave it, one size fits all cookie cutter approach, they will truly rule the world. Someone will do it does it hurt. Not a matter of if. A matter of when.