Why do we not see more progress in male bouldering?

During the last ten years we have seen an extreme development when it comes to the number of boulderers, Boulder problems, gyms, training facilities and training theories. At the same time, the female and the youngsters have pushed several grades up and in fact getting closer to the male, who show limited progress. Why do we not see more progress in male Bouldering with all these improved preconditions including videos, chalk, shoes and crash pads? Bouldering did become a sport about 20 years ago with great development during the first ten years but then it more or less stopped. Could one of the possible explanations be that some 8C's actually deserve the 8C+ grade?