It has already been written in this topic above, everything is connected precisely with a large number of operations through the network, a high degree of community interest in projects, and a fairly high cost of the coin itself, I think that it will definitely not be cheaper if the developers themselves do not change the approach, and they before the introduction of 2.0, nothing is fundamentally, they will not change anymore.
to turn into a low-cost platform is unlikely to be done by ETH. maybe this could be the distinctive identity of ETH to be a high cost platform. maybe ETH will provide more different and better features in the future.