This isn't true. Lens which optimize for performance at the cost of size are becoming more mainstream. But that isn't to say that this is the trend for the mark

This isn't true. Lens which optimize for performance at the cost of size are becoming more mainstream. But that isn't to say that this is the trend for the market as a whole. We're simply seeing more options. Take Sony for example. They have their large 50 1.2 and 1.4, but they also have several small lenses: the insane 55 1.8, the 1.8, the 2.5G, and the 2.8 macro. And you can go smaller still if you go the manual focus only route, e.g. the even more impressive CV 50 f2 APO.