[Viliam1234]

> Typically the biggest constraint is that it must relate to the business in some way.

This is so short-sighted, because it means you can't learn anything unless your boss is 100% sure it will be immediately useful (at which moment, someone else is probably already assigned to do it). Most things I learned in my life were not immediately useful when I learned them, but many became useful later. Programming itself is a good example of this; when I was a kid, computers were considered just an expensive toy. By this logic, I should have never learned programming in the first place.

These constraints do not allow you to explore. If there is a new framework or a new programming language which MIGHT improve your productivity, but also MIGHT be a useless fad, you are not allowed to find out which one it is. No one in your team is. Thus you get stuck with the old technologies forever (or someone breaks the rules, or someone studies the new technology in their free time).