> An argument can be made that Anthropic is also only doing the last 5% of the work (because the content they are training on was the other 95%) but that's a bit more philosophical.

Actually, it's an interesting argument to make. How many labour-hours went into creating the training data Anthropic has collected? Probably multiple billions of hours. How many labour-hours did it take them to setup the datacenters, scrapers, and training algorithms? A few thousands hours?