The phrase "a proprietary service" is correct and usable in written English.
It can be used to describe a service that is owned by a specific company or organization and is not available for public use or distribution.
Example: "The software company offers a proprietary service that provides unique features not found in any other product on the market."
Alternatives: "an exclusive service" or "a private service".
And even if Apple ultimately decides to make iMessage a proprietary service, it may compel operators to allow Google and Microsoft to offer similarly frictionless text replacement.
You can't quite get that from an app, unless you pay $20,000 annually for a proprietary service like Bloomberg, which will throw in the app free.
Another design dilemma the organizer faces is whether to locate the community directly on the Internet or within a proprietary service.
We collected resale values from camelcamelcamel.com, an online price tracking website, and from usedprice.com, a proprietary service that uses dealer surveys and other sources to estimate used prices.
In November 1996, when MSN announced its transition from a proprietary service to a Web supersite, it unveiled a lineup of more than two dozen shows for what its executives — borrowing from the language of television — called a new season.
He has turned commodity parts into a proprietary service, just as nature turns the massive redundancy of just four DNA bases into a dazzling array of unique ways to deal with risk and uncertainty.
Owing to technological advances and the increasing prominence of the World Wide Web, the Post Company also formed the subsidiary Digital Ink Co. (1993)—a proprietary online news service, which later became Washingtonpost.Newsweek Interactive (1996)—to handle its new media endeavours.
If you're sending a text, photo or video to another iPad, iPhone or iPod Touch, iOS automatically uses a new, proprietary service called iMessages instead of sending a traditional text message.
"There has been talk about launching a proprietary Marvel service and 'Star Wars' service". He added, however, that Disney was cautious about stand-alone services for those film brands, in part because a large amount of content would be needed to satisfy subscribers.
I also recommend avoiding any proprietary services that are not available at other cloud providers.
At an extreme, the proprietary service could "backward integrate" by establishing communities of its own to compete with the communities it serves.
