Cloud computing and scalability
It seems like you are missing the point of a scalable cloud.
If the intend is to run a scalable application and scale it globally, the idea is NOT to let the user or the developer do what they want, but to prevent it!
Bloatware is not amoral. When somebody wants an extra button on winword,or a bigger cache in internet explorer, or a cute (but big) intellisense feature, then we just throw it in.
If, on the other hand, there is more weight on the respect for every other user in the cloud, and the propagation time of new data and software versions, then bloat is not ok.
A good cloud architecture discourages diversity, discourages complexity, forbids caching, and guides the developer away from bloating.
If you want to make a "cloud" of one million instances of winword or internet explorer, or similar software, then you are just not understanding the point. Those are two fantastic, high quality products, for single user computers, who don't share data. They are designed by the very best "crayon and fingerpaint" engineers, who have done a danm fine job at perfecting the single-user experience.
If you want a global, multi-user document entry and cataloging software, you would be misguided to promise anybody winword like features. Instead, you could promise to "store the text and some strictly limited formatting".
If you told the "fingerpaint programmers" that they had to grow up or get fired, then you would be on the right track.