To be honest, Mediacrap legitimately has congestion issues.
When I was on Mediacom, things started out fairly decent. But they overbuilt rather quickly into traditionally Knology territory (which was even worse at the time), and it didn't take long for Mediacom to have significant congestion issues where I was. A complaint or two ended up putting me on another node, which alleviated things for a couple weeks until that node filled up. Primetime usage on Mediacom was basically worthless.
Of course attacking it from an infrastructure standpoint rather than a shareholder profit standpoint would probably serve their customers better, but hey... what do the shareholders care?
Re: To be honest, Mediacrap legitimately has congestion issues.
Yes they do. But this move benefits them in absolutely no way. Their caps are generous enough that it will truly not affect 97% of their customers. The 3% it does affect are probably either going to reduce their usage or switch providers. Neither of which has any positive impact on shareholders.