I was amused to see Microsoft selectively quoting users regarding Office's adherence to standards and its compatibility.
They do make some valid points re support, however my personal experience in the enterprise is that the average desktop user almost never calls for support from the vendor. It's usually IT support who gets the call or the person in the next cubicle (often myself). Which means that support is more dependent on the level of familiarity within the customer organization rather than vendor support. So yeah, Microsoft will usually win there, because more people know Office. As more people use Open Office, it's going to be less of an issue.
They do make some valid points re support, however my personal experience in the enterprise is that the average desktop user almost never calls for support from the vendor. It's usually IT support who gets the call or the person in the next cubicle (often myself). Which means that support is more dependent on the level of familiarity within the customer organization rather than vendor support. So yeah, Microsoft will usually win there, because more people know Office. As more people use Open Office, it's going to be less of an issue.