A recent Digikey parts search, sorted by price, starts with thousands of "marketplace" products priced at 0.01 and not in stock.
And they feel free to ignore search constraints... not that their constraints make much sense to start with.
Datasheets are often just a link to a manufacturer's web site, which sometimes requires registration and a password.
A rep from another distributor told us that most distributors no longer stock parts, but are middlemen to the manufacturers, and that Digikey was one of the few stocking distributors. Looks like that's not the trend.
So Digikey is just a multi-vendor search engine and maybe a source for a few prototype parts if they are available. That doesn't sound like good business.
Some of their pricing is crazy too, like a dinky connector for $450.
Mouser is going "non stocked 26 weeks" a lot too. They often have no datasheet link at all.