Transit Television Network Bankruptcy: Can the public take over the system?

Transit Television Network, a subsidiary of Torstar (owner of Canada's biggest daily newspaper), has filed for bakruptcy.

In Milwaukee and other cities where it set up on buses, TTV seems universally loathed for reasons mentioned by this LA blogger: http://metroriderla.com/2006/12/03/transit-tv-how-we-hate-thee/

Worst of all, TTV has been an infection in public space. As a local rider puts it, TTV content screams one message over and over: "You are a Bus Rider; You are a Loser. This xxxxxx will save you from your misery. $19.95 and operators are standing by." Or a free PC by giving up your phone number and checking account number. Or the scams that came to us with the SAME actor, different names for the scams, but just call 800 xxx xxxx and your life will be turned around -- $500,000 from your home in one month. No one in their right minds would call such a number but that shouting sent a clear coherent message: You Are A Loser. And that message has pervaded bus service for the last decade.

My question: is there any way the existing hardware might be repurposed by creative groups to have a more publicly edifying message?