None, but the reasons are more legal than technical. None of those projects have come close to Microsoft in terms of creating a product, for pay, that average

None, but the reasons are more legal than technical. None of those projects have come close to Microsoft in terms of creating a product, for pay, that average people reasonably rely on. Again, using a legal definition of reasonably; a widely used and paid for product can be held to something like a "merchantability" standard - especially if Microsoft has ever claimed their product to be safe and secure, which I'm fairly certain they have.