Not necessarily. I am currently working on technology which will ensure that user is authenticated when making such purchases like of give finger print which is attached with your public profile like facebook page during alcohol purchase which can verify you age, and even determine if you are allowed to consume alcohol etc. (just an example, i work on the platform which can be used to make this and much more).
Doctors are also part of eCom now with Ola kind of apps which can deliver them to you on beck and call. Guess same can be made for lawyers and barbers. (a lawyer and a dcotor may not be business but a hospital or law firm is).
I've mentioned about virtual consultations in the first part, which aren't reliable. Are you ready to lie on the operation table for appendix or gallbladder removal without the doctor seeing you before personally ? I don't think, neither the doctors are comfortable that way.. It requires a generational change in mindset. Probably the next generation may be more intelligent (or dumb) enough for that.
Developing a technology is a different matter, it's implementation, statutory regulations will take much more time. We don't have any valid regulation for fall outs of virtual medical consultations till now. People are using it at their own risk.
Moreover e-commerce changes the way a product or service is marketed and delivered nothing else as of now .
Skilled professionals of any stream (medical, engineering, sports, research, performing arts) shouldn't be affected significantly by e-commerce.