Meta's China risk is overstated: the spend from Chinese advertisers is diverse and resilient to everything short of a full-blown trade war. 

Apple (and Tesla) are in the more precarious position of selling directly in-market, and face sharpening domestic competition.

Amazon's exit from selling in China still leaves it exposed: its marketplace strategy is built on Chinese sellers, whose potential routes to market are proliferating with local platforms going global.  

Book pricing has stagnated over the past two decades, leading to severe real-term declines in price per book. Nominal prices are now on the rise, but they are still swamped by inflation, and there is no prospect of them catching up to where they were.

The cost to produce books has been hit by many of the same inflationary conditions affecting companies (and people) across the board, leading to tough conditions at publishers, particularly small ones.

Fortunately, books offer many ways for publishers to price discriminate, charging more to price-insensitive, motivated readers.