Apparently as consumers we don't own anything anymore, we are just renting it from our corporate overlords.
You don't have to buy these machines. If you choose to buy it, you've bought a Windows 8 machine and have paid for it. It's not like MS promised you a dual-bootable machine and sold you a single-bootable machine. You know what you're getting, and you can choose whether or not it fits your needs.
Microsoft isn't known for playing nice & allowing competitors to compete fairly. So yes there will be choice, but relying on that as a justification is pretty risky imo. Esp considering MS's standard MO and history.