What a great idea !
Of course, it is plainly obvious that the publishers will realise their social responsibility and support for education, and sell the etexts at very reasonable prices, thus helping hard-pressed students.
In fact they may sensibly offer to sell the texts "on lease", again at a reasonable price, for the length of the student's course, accepting that that is all most will need them for.
It's as plain as the nose on yer face.