Developers certainly are prey to that impulse, but management tends to want ROI... Rewriting existing apps / services / etc. that work and have been refined over time is usually not a money-maker (unless they can't scale, say). But it is good for PMs and PdMs to say "my team built Z in just two months! (which does do exactly what Y did, but we lost the guy who wrote that...)"
And that’s why React is the dominant framework in companies, and frameworks are either passion projects from open source developers (like Svelte), or from big tech, which has the resources for it (FB & React, Google & Angular, MS & Blazor)
Rewriting apps is a huge money maker. You need pretty much constant UI churn and product churn or consumers move on. This isn't the case necessarily with B2B, which is why we see a lot more "legacy" (aka stable) applications.
