My experience has not been from the perspective of a teacher but, that of a sales person aiding to facilitate the introduction of technology into classrooms and districts. The changes discussed will happen but, not rapidly. There are too many variables.
First and foremost, districts struggle financially to upgrade their aging technology to simply bring it up to acceptable levels. I worked with a district a school in Grosse Pointe 2 weeks ago that was still running XP on most of their computers. How can they possibly begin to think about online learning?
In situations where students are motivated and have access to outside means to achieve requirements online even when there school doesn't we cannot stand in their way. The scenarios on the class blog were very interesting. In the case of the student with leukemia, this is exactly why online learning is so wonderful. The student can keep pace in way that helps them but, doesn't exclude them because of their illness. In the case of the family that just "doesn't like" the teacher, that to me is another story. We have all had to work with individuals we did not like and that in itself is a learning experience. I do not agree with the student taking the class online because of that reason.
The change will come but, it will be slow and steady.
