I remember that around that time several other companies were competing with IBM. Texas Instruments made a PC-compatible machine, DEC made a (somewhat) PC-compatible machine[1], etc. And Gateway was founded in 1985.[2] There's a lot more information on IBM PC clones in the Wikipedia article on that topic.[3]
[1] https://en.wikipedia.org/wiki/Rainbow_100
[2] https://en.wikipedia.org/wiki/Gateway%2C_Inc.
[3] https://en.wikipedia.org/wiki/IBM_clone