Some thoughts:

- just because it doesn’t help 99.9% of the companies today it doesn’t mean it won’t help them tomorrow

- 0.01% of the companies employ a much bigger percentage of people

- 99.9% of companies won’t need to do a project of this magnitude

So you think if a company can't spend 1 million USD on a rewrite which has almost zero impact on performance, possibly net negative on maintainability it also can't have 500k LOC codebase either? Oh come on...