They're not thinking this through...
It is obvious that withdrawing this support can't generate any positive publicity, which suggests that it's a cost cutting measure. So, as someone who isn't currently a RackSpace customer, what does this sort of thing indicate to me?
Much like switching to economy brand coffee for meetings (and I don't drink coffee), it suggests an organization with questionable financials who are frantically cutting corners, even at the risk of reputational damage. Maybe it will be an economy supplier for backup generator maintenance next month, or economy CAT6 cabling. Overall it indicates to me that I am best advised to continue not to be a RackSpace customer, even if I don't give a damn about freebies to OSS projects either way.