I guess what OP is saying- "What if we could have the REAL MS Office on tablets?" No matter what, all alternatives fail when saving/opening funky Office files. The only thing 100% compatible with MS Office is MS Office, so if you need to be compatible for work a tablet doesn't cut it for you.
MS already has Office running on ARM, so the potential is there, but I NEVER see them releasing it to another non-MS dominated platform. Only reason OSX gets Office is because MS doesn't see OSX as a legitimate threat, but they are behind in the Tablet market and an iPad + its MS Office could spell an end to the company's dominance of the IT field.