While this is clearly a problem, you can’t ignore the fact that many of these hosting centers are not compromised, but actually catering to a shady clientele.
“By stealthily commandeering these hosting centers, ‘their goal is to get access to bare metal’ to hide but keep control over resources they want at their disposal, Gundert points out. Cisco believes there are ‘many thousands’ of these compromised web hosting centers around the world whose resources now lie under cyber-criminal control, he says.”
Source:Computerworld Malaysia – Cisco: Thousands of web hosting centers now launchpads for attacks