Your use of straw man arguments in response to a straightforward historical description is both inappropriate and condescending. You may think IBM’s executives were naïve, but that does not change the actual history of the IBM PC. IBM prioritized time-to-market by using off-the-shelf components and assumed their control of the BIOS would prevent compatible clones. That assumption was proven wrong when Compaq successfully did a clean-room implementation of the PC BIOS, without violating IBM’s IP. This is a well-documented part of computing history.