I wonder, if you had some impossible deadlines and a ton of code you had to write just to survive to the next funding round, would you want Alan Kay on your team? I say this with enormous respect and admiration for Kay, but there are horses for courses and groundbreaking ideas are not the same as shipping product.
Alan Kay's work is not about how to ship the product within the next 2 months. But it can be helpful to listen to his talks in order to maintain a longer term view and to see fundamental limitations in the way we do things.