Universalizing a bad idea is also a bad idea.

The defense that everyone is doing it is weak sauce. If you want to jump in as an apologist for a bad business model, give it a bit more effort.

As for dealing with it, I've no trouble there at all, so don't worry yourself, I wait till TW games are at least 50% if not 75% off before buying them, at which point typically the DLC is either on sale as well or already rolled in.