I think that it would be productive to reframe the usage of plagiarism-detection services such as Turnitin away from a "gotcha" on cheating towards teaching students to properly cite their academic work. For example, I have heard of professors requiring their students to print out the originality reports themselves and turn them in with the assignment in order to promote accountability.
In addition, the turnitin service itself has its own quirks. I remember when we used it back in high school, it would pick up direct quotes even if they were in quotation marks and use those matching strings to contribute to the total "originality score."
I expect we will also be seeing more cloud-based ebooks in the future, such as those the bottom of the article indicates McGraw Hill has introduced. The same way that gaming companies increasingly push a subscription-based service over a singular single-player experience, a continual subscription to a cloud-based ebook service would help avoid the inevitable mass piracy of the materials.
In addition, the turnitin service itself has its own quirks. I remember when we used it back in high school, it would pick up direct quotes even if they were in quotation marks and use those matching strings to contribute to the total "originality score."