1/ I see a lot of ppl starting education businesses these days, whether they want to or not, and whether they call it that or not Here's the best 4x4 for thinking about the online education landscape I've found so far

Building something of significant value to the student, but shifting the risk away from the student to your company or the current or future employer is the way to build a very large education company. Prenda does this for parents in K12 by serving as a public charter school, Lambda does this for students by deferring tuition until they get a job.