Answer
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The extent to which a computer manufacturer should be allowed to own a new machine architecture depends on various factors, including legal considerations, competition policies, and potential impacts on innovation and market dynamics. However, it is generally beneficial for society to strike a balance that encourages innovation while preventing monopolistic practices that could stifle competition.
The best policy for society would involve a combination of protecting intellectual property rights to incentivize innovation, while also implementing measures to ensure fair competition and prevent anti-competitive behavior. This could include regulations that promote interoperability, standards, and licensing agreements that allow other companies to access and build upon the new architecture. Such policies aim to foster a competitive environment that benefits consumers through a variety of choices and prevents the concentration of too much power in the hands of a single entity.