That's why people traditionally moved right as they aged. However, millennials are bucking the trend is the point.

It is also posited that as you age, you're more likely to have family and think about their immediate needs rather than society at large.

However, it can be just greed. The problem for conservatives is that they have tipped the balance so much that the divide is much greater and inequality greater, so they need to convince people to vote against their interests. The bottom 90% are far better off under more social measures.