Some people are doing exactly this. The jibiki.fr project for example converted the Japanese-French dictionary from Cesselin into a digital form. OCR being what

Some people are doing exactly this. The jibiki.fr project for example converted the Japanese-French dictionary from Cesselin into a digital form. OCR being what it is, plus change in orthography since the dictionary was published make human revisions necessary. It's a slow work as few people is interested in lexicography, moreso when dealing with "rare" languages or language pairs. There's a trove of old dictionaries in the public domain, for languages that sometimes have no computer support except being encoded in Unicode (I've in mind a dictionary written in the Amazigh alphabet). I've personally worked on the topic, on a niche language pair and writing system, yet it's far from being finished. With funding thing could go exponentially faster. This is something forgotten in the current AI talks (except from the artists point of view): the AI vendors would glob open data in an instant to improve their model but they don't contribute a dime to making the data available in the first place. And it's not hypable enough to raise money. Heck, with half a million of the Microsoft infinite money is throwing at OpenAI I could make your post a reality with a bunch of dictionaries I've in the top of my mind.