I kinda wish it would. Anecdotally, as a dual income household grandparental assistance was indispensable in raising our baby, and I've sorely missed it since the pandemic hit and no one's visiting any more. I recognize how lucky we were to have that available, since not everyone does.

I think it can also have great benefits for the grandparents, who find a new sense of fulfillment and purpose and something to fill their time later in life. It reminds me of the studies on combining preschools and nursing homes showing positive outcomes for both populations. Also, intuitively, multi-generational households were the norm throughout human history before industrialization and economic centralization encouraged "leave your family behind and go Seek Your Fortune".