Yes, and I think their chances are not bad at all. RHEL is the safe&boring choice for your run-of-the-mill web/file/DB server, I don't think there's any doubt about that. I think however Ubuntu is much better positioned for clients, like Linux laptops for software devs. A new LTS every two years with up-to-date software, the ISO/CIS compliance stuff makes InfoSec happy, the deployment/AD integration features make IT happy, and lots of choice for Ubuntu certified laptops from the big enterprise vendors (Dell, Lenovo, HP, etc.) make procurement happy, so I think it is a really attractive choice for a company. And once you have Ubuntu Pro for these machines, why not use it on the server as well, especially since it's cheaper than RHEL.