Businesses will buy expensive phones if they do the things they need and support integration and management with the systems they already use. You really need third party tools to manage iOS and Android's all rely on Google Apps and have weird holes in their capabilities (e.g. device backup is a PITA). If the argument is for getting phones for middle managers who aren't important enough to demand an iphone and exemption from IT policies, having policy-based management that's already built into your enterprise directory system is probably a decent argument. I'm thinking this is more of a push to eat what's left of RIM's market.
Microsoft's Surface devices may to a certain extent be a "showing of the flag" rather than a highly competitive design. I support Surfaces in my organization and I think they're pretty great, but I say that with the understanding that they're as much a nudge to wider portable PC hardware manufacturers and to engage Apple in a certain amount of one-upmanship as they are compelling devices. It's a radical sort of product that can be made to serve in a wide variety of situations and putting them out in the world may be providing the impetus for improvements in other portable hardware.