They're very late to do this IMO, but better late than never. I am certain that VMWare has not been selling many Workstation licenses to personal users (costing ~$300 each) and making the products free gives free advertising and mindshare to VMWare. Visual Studio is a good example of this, Microsoft making Visual Studio free for personal use in 2014 provided a huge boost to a platform that a lot of people had written off as dead, irrelevant, gray corporate software.