An important consideration here is that velocity is not zero sum. If you are delivering in weeks what used to take months you are creating an entirely new realm of what is possible to do with software within a corporation.
In the real world, I have never worked for a company that doesn't have a huge backlog (either tracked or in engineers heads) of work that would never be done because it wasn't economic under the old model. This tends to apply to the internal work of engineers (developer tooling, infrastructure, tech debt, etc) more than anything else. 10X faster doesn't necessarily mean shipping 10X product code. You can use that productivity boost to accelerate prototyping, ship betas faster, move the iteration loop faster, all while shipping higher quality code with less tech debt and having the time to continuously improve the engineering side of things that the business never sees.