Before the coming of bitcoin there wasn't anything that people could use to transact online with other people and the people used to do bank transfers to make deals with people in some other country and that took a lot of time to confirm and wasn't at all trusted so the chances of being scammed was pretty high but bitcoin was liked by everyone as it holds value and in case of transacting online you can't get scammed now as escrow are possible, so for the people who have business online they can use bitcoin to get rid of many problems like charge backs and frauds.