My concern is that as the share buybacks continue, the A shares are being diminished. I'd expect the price spread between A and B shares to continue to grow.
One A share is equivalent to 1,500 B shares, but the B shares have 1/10,000 the voting power of the A. As less and less A shares are available, that spread will continue to grow and power will more easily be available to get.
So WEB and Greg will have to continue to buy A shares to minimize them so that the B share equivalent can somewhat match them voting weight wise.