How did IBM's open architecture lead to PC clones?

IBM’s decision to utilize an "open architecture" for its personal computer was a strategic move that inadvertently facilitated the rise of PC clones. By designing the system using commercially available, off-the-shelf components—specifically the Intel Corporation 8088 microprocessor and an operating system from Microsoft Corporation—IBM allowed third-party developers to easily create compatible hardware and software.12

This openness meant that rival companies could "reverse engineer" the technology to build machines that were "100 percent compatible" with the IBM PC. Because these clones could run the same software and utilize the same peripheral devices as the original IBM machine, they provided a viable alternative for consumers.23

Companies like Compaq Computer Corporation successfully capitalized on this by producing portable, high-performance, or lower-cost versions of the IBM design. Ultimately, while IBM’s approach helped it rapidly enter the market and establish a standard, it also diminished the company's ability to maintain exclusive control over the industry, as the proliferation of clones shifted the market toward a standardized, competitive landscape.231