Making various transactions, either for goods or services is part of the activities of individuals and households. Obviously the utilization of the flexibility of Bitcoin for these transactions is on the rise, but something we're yet to experience, is using Bitcoin for micro transactions; gaming, online tipping, unlock assets of content creation, just to mention a few. For flat currencies, smaller units of the currencies may be in short supply to make such transactions. Households and individuals will surely be jumping at the prospect of the option of Bitcoin for these nature of transactions.
I remember when steam is accepting bitcoin, unfortunately they removed it because in my opinion they don't have what it takes to create good payment system around it not because bitcoin is bad, they just still have no idea how to do things in my opinion, it was the early days. But nowadays there are so many bitcoin payment gateways like the one created by coinbase which is seamless.
I can imagine those micro transactions can boost the on-chain transaction in bitcoin since fee is very cheap right now. It could happen and there are already game stores accepting bitcoin already and they seem to have no problem.