Entitlement has nothing to do with it. If there is a machine that lowers the costs of production by 20% the price will drop, because there's now an opportunity for competition to drive down the cost of coffee. That's how things become more affordable in a market economy.

And this is the actual point of the analogy. When people can suddenly work from locations that have lower costs of living, then the cost of labour drops, that is to say more people are willing to do the same work for lower wages than before. That means that firms can purchase that labour more cheaply.

Nobody is entitled to anything here, the price discrimination is simply the result of the market correctly allocating resources, and that's a good thing, because it really does not make much sense to hand surplus profits to starbucks or to tech workers.

One very simple reason why the latter is really bad, if a lot of tech workers suddenly sit in regions with lower costs of living their high salaries will rise the costs of living, creating a huge problem for all the people in the regional economy who don't work at Facebook.