There probably also is a bit of a difference in the companies business context. A rewrite in my company needs to be argued for and needs a solid business case, I.e you need to estimate that the burden of the current code base is choking the dev team and that the rewrite is a better alternative to plain refactoring.

Essentially most rewrites I am aware of were either of really small tools or when a project had been written in an esoteric programming language.