[virusduck]

If you look at it another way, groups that have a handle and understanding of a particular tool may have insight into how that tool can be used to answer a biological question. I don't think there is anything really wrong with that, but grants should be denied if they aren't proposing ways to move the field forward.

There are tons of mouse labs, however some have specialized mice or mouse systems. There are also other labs that specialize in other animal systems. These systems are nontrivial to switch between for many reasons, which I think you acknowledge. It is useful for the field in general to have access to the results of a variety of research tools that every individual wouldn't necessarily have access to.