With this ruling renting an antenna will basically never be a valid workaround. The argument is that because Aereo is the one dealing with the antennas, they are the ones doing the broadcasting.

Now, if the equipement were sold instead of rented, and obstensibly Aereo was only providing electricity to the antenna/DVR setup, then things might have been different (at least it was implied in the oral arguments). But obstensibly the service being provided by Aereo was one of broadcasting, not of hardware hosting.