They're probably worried about liability. Let's say that Oracle finds out you reverse engineered their DB using Gemini. You can be sure they will sue Google. Not just for providing the tools, but you could make the argument that it's actually Gemini doing the reverse engineering, and on Google's hardware no less.
midges can fly, so presumably they would hit the web at random points. as to why flying would be useful for the midges, if they consume biofilms on the surfaces, that's less clear. perhaps over time the midges will evolve away from flying and the spiders will have to adjust their strategy.
This is based on the Dear ImGui library/framework [0]. It's not intended, strictly speaking, for standard desktop applications. It's intended for applications that use 3d rendering, like games or CAD.
Although you could certainly use it as a desktop editor if you wanted to, I think the real value is in embedding.