Online business will not totally remove traditional face to face business. You should be aware that what is translated offline is what is duplicated online.
Most future entrepreneur or technocrat may be comfortable to make transaction online but the traditional business owners who are in the percentage of 80% when you talk about the farmers, traders etc will still do their business offline.
Also, most goods apart from digital downloads can not be fully completed seamlessly without offline activities. Though, you can make transaction getting your goods but you will require offline dealings.
I believed one of the main objective of online business is for convenience transaction of instrument and effective promotions of value products economically.