It's sad because when you do DLC right, it can actually prevent layoffs. This infographic sums it up pretty well: https://www.extremetech.com/wp-content/uploads/2015/08/DLCWo...
A good example of how this works is Paradox Development Studio. Paradox does a great job creating a constant stream of what are basically expansion packs, accompanied by free patches for those who are uninterested in what the expansions have to offer (and you don't have to buy the expansions linearly, either; if you want the third expansion but not the first two, you can just buy that one).
I'm not saying that the way they design their expansions is perfect (EU4 in particular has taken a lot of flak for missteps of this kind), but the basic model is fantastic, and when done right, it only enhances the experience.