This was very common and resulted in things like IBM PC clones that sped up innovation.
i don't think it was due to reverse engineering but bcz of releasing specification by IBM them self due to which other manufacturer where able to make identical clone and can run extracted BIOS from IBM PC without any modification!
i don't think it was due to reverse engineering but bcz of releasing specification by IBM them self due to which other manufacturer where able to make identical clone and can run extracted BIOS from IBM PC without any modification!