This is actually more accurate than you'd think. While everyone used IBM PCs as their personal computers for many years, IBM was harmed massively when their PC

This is actually more accurate than you'd think. While everyone used IBM PCs as their personal computers for many years, IBM was harmed massively when their PC BIOS was reverse engineered and then copied by Compaq (and subsequently many other computer manufacturers.) In fact, arguably, because that happened, we had a cheap IBM PC boom where software would work on multiple hardware platforms made by multiple different companies. This led to Microsoft's rise. Arguably, if they only sold on IBM-sold PCs, they would have made a lot of money, but nothing as meteoric as they did. Yes, not having a patent on something actually created the behemoth which is Microsoft.