Yes, bitcoin can be a mode of payment. Bitcoin is a digital currency which has a faster and reliable transaction when you buy in online and most people really wanted that to be happen.
One problem, however, is that the cost of bitcoin is a serious problem. The cost of carrying bitcoins now is too high. As a means of payment, the cost is too high, which I think will affect people's use.
based on the current price of bitcoin , the fees in it right now arent actually high or expensive enough because The bitcoins value has drastically decrease. therfore id say that bitcoin is still ideal to use as a payment method for sending or paying money online rather than using any method like payapl or credit card as they require more infos and hassel stuff that can slow you down. Aside from bitcoin altcoins can also be used as a good alternative for payment gateway if the fees are increasing again.