Composing is slower, true, but composing a page for a printing press isn’t really comparable to typing on a typewriter. The cost of composition on a press is amortized across hundreds or thousands of pages printed, which isn’t the case for typing. In fact, we know that composition was worth the cost because the Chinese and the Japanese eventually did adopt the Gutenberg-style printing press in the mid-to-late 1800s as they industrialized and opened up to Western technologies.
Composing is slower, true, but composing a page for a printing press isn’t really comparable to typing on a typewriter. The cost of composition on a press is amortized across hundreds or thousands of pages printed, which isn’t the case for typing. In fact, we know that composition was worth the cost because the Chinese and the Japanese eventually did adopt the Gutenberg-style printing press in the mid-to-late 1800s as they industrialized and opened up to Western technologies.