Some of these software companies want you to use your work email so that they can go after your company after a while to pay licensing fees. The argument is tha

Some of these software companies want you to use your work email so that they can go after your company after a while to pay licensing fees. The argument is that the software is only free for personal use and because you used your work email, it became commercial use. And because you used it for a while already, there are nonzero costs that your company needs to pay and cannot undo anymore. Not saying all companies are like that, but I have seen some do this.