For businesses where a significant percentage of customer LTV is in the expand phase, I'm surprised it's not more commonplace to have AEs take on the role of cu

For businesses where a significant percentage of customer LTV is in the expand phase, I'm surprised it's not more commonplace to have AEs take on the role of customer success. The AE usually has a lot of context about the customer that is likely to be lost in the transition to a CSM. Doing this also has the benefit of not needing to pay two people for the expansion.