There is that too, but you could solve that by having engineers/teams working in new, cool, and useful products. I feel my company doesn't have a good mechanism to maintain services that aren't actively developed.

We experience it first hand when one of our services got deprecated and we moved to a new org. The solution was literally to hire a new team in a low CoL country and hand over the service to them. Needless to say it was difficult to hire for those positions.