1) In my opinion, the advantages outweigh the disadvantages, it just seems that way. I think the biggest advantage is that you study in a comfortable environment and can study whenever you want, although the latter can be a disadvantage.
2) The transition to digital education cannot make education more accessible, after all, not everywhere there is a stable connection to the Internet, and even more so, not all countries have the opportunity to introduce digital education throughout their territory.
3) Unfortunately, I cannot foresee this, but I believe that even now education is becoming more digitalized and full digitalization cannot be expected. But in any case, the old "face to face" system will remain, at least for specialists or students with great opportunities and abilities.