To succeed, MeeGo needs top notch PR and marketing for both the OS and any devices running it. That's all.

You spend more money on advertising than you do on R&D. It doesn't matter how good anything is, consumers just need to feel good about themselves. You tell them your product is fantastic, you tell them they are smart if they buy it. You show them how attractive and smart all the people who own your product are. You don't talk about competing products, there are no competing products. Your product is unique. You turn every owner of your product into a salesperson for your product.