Any business which intends to last longer than a hackathon would get a greater long-term advantage by developing such queries in-house. And most of those example APIs are available for free from IBM Watson/AlchemyAPI/Open Source anyways.
That reminds me of this challenge Heroku is currently facing (http://go.theinformation.com/884b08):
> When an app hits a certain scale, the cost of Heroku can be many times that the cost of cutting out the middlemen and running on AWS directly.
> For that reason, Heroku finds it tough to attract big companies. They know they’re going to operate at a large scale, and they’re open to taking the trouble to cut out the middleman of a Heroku if the savings are great enough.
https://medium.com/@21/buy-50-apis-with-bitcoin-in-the-21-ma...
The command line example in that article requires a $400 bitcoin device.
Because of that it's possible that many people don't consider building them (and some people do it for free, but it's another matter).
If there is a simple system to charge for such services, we might soon see a situation in which there are literally thousands of available services. And it's not a choice between using CC and using Bitcoin, but a choice between using the few services that handle CCs, or a plethora of services that use bitcoin.