Incorrect.

XM when they started they needed financial help in the beginning, thus they received help from clear channel. Part of that deal was to have a few channels run commericals. CC decided to put that part of the deal into effect once XM starting getting bigger. XM fought it in court but had to comply. XM however added there own channels to replace those very few with commercials so actually you really lose nothing. Soon those channels with commericals will be gone.