Comment by baranul

A rewrite needs to first make business sense and where there is clear ROI. The problem for many companies, is they can get suckered by architecture astronauts and their specific or peculiar tastes, so that they end up just flushing lots of money down the toilet.

And then the architecture astronauts, especially the slick ones, jump ship before people fully recognize or become aware of the new bugs, level of waste, or extent of damage that was done.