I don't understand why there isn't a broad consensus that all radio
is headed for IP over data wireless.  AM, FM, digital broadcast, and
satellite all require special equipment, sometimes quite expensive
equipment (I assume maintaining a big antenna can run to real
money, let alone satellites). In all those cases the infrastructure
has to be built with revenues taken out of the radio business. 

By contrast, the IP infrastructure is built for a zillion reasons,
only a tiny fraction of which have to do with radio. In essence, the
infrastructure comes free for both sender and receiver, supplier and
consumer.  True, IP bandwidth costs something -- there is a marginal
cost per subscriber in a sense that there is not with broadcast --
but the cost of bandwidth is falling by 35%/year and is going to
keep falling at that rate for a long time.  (Even if you don't
believe what the cognitive/software radio guys are saying.) The IP
infrastructure and its associated peripherals are just getting
more versatile, robust, and powerful every year.  You can do
anything with IP that you can with any of the other distribution
technologies.  

Why isn't it generally agreed by everyone that sooner or later all
the programming out there is either going to move onto the net or
die?