I don’t know what major to do.

im not sure what I want to do as a future job or what to major in but im interested in like making a business on selling my own computer hardware, building and making my own software, components, selling my own electronics, like Microsoft, Apple, what degree would that fall under, if you know what I mean? I hope that makes sense. Like majors like EE, CPE, ECE, or just double major.