Innovation is always the best answer for this shit; a technology that makes it possible to compete without a huge investment will end the monopoly. Then low and behold the old guys won’t be sucking your blood anymore they will be alive and competing!

There's an old solution for monopoly suppliers, Cooperatives. If a monopoly is owned by its users then the whole conflict between greed and utility just disappears. Cooperatives been around for farming since before my grandfather’s time I don’t know exactly how long but they were used to buy big tools and grain elevators that every farmer could share.

I buy my groceries from a co-op, much, much better products than the chain supermarket and good prices.

Yes if you organise you get some of the power of the cooperative just by virtue of having done it. I would think this is the best solution, to actually start the cooperative and keep an open ear to the monopolist, seeing if things can be settled at the earliest possible stage.

If the users organize a boycott it can force the monopolist into better behavior. Though it can be kind of ugly and tends to leave a bitter taste for both sides. A theatrical action before this could be a petition or media generation on social networks.