Did you watch the video? With her training ramp she effectively had December to sell. I’m not sure about the Cloudflare sales cycle, but I’d guess most deals aren’t going to happen in a month.

There is no install needed, you can just edit permissions and make the file executable and then when you open it or click it the app runs.

What won’t be created by default is an application menu to run it from whatever desktop environment you use. You can create those if you wish. You can create a launcher in the menu manually, or you can use a tool called AppImageLauncher to create these for you.

There’s a pretty good explanation here: https://askubuntu.com/questions/1311600/add-an-appimage-application-to-the-top-menu-bar

The difference being that Prince did that change to screw his record label intentionally.

Other differences include the facts that Prince had talent, and that some people liked him.