it might be possible that the limits are reached by 11 speed. In the seventies and eighties only 7 and 8 speed was used, now using 11 speed while the width of the wheels is still the same, the sprockets became more narrow, the chain became more narrow.
Lets be honest too, how many people will use 11 speed, how many gears the people will use when they ride the bicycle.
Yes I think it should be the trend in the bicycle industry and this is not only for the gears, it is for the weight of all the parts, frame sets and front fork, but please don't forget, that it will be still the legs, who will need to make the movement and that training still will be needed to ride the bicycle and to finish in the top in the races. Maybe we can make a new topic about in which way we train.