Probably, they will include it to those transactions that they can benefit from. Cryptocurrency is a digital currency that has unpredictable price in the market so most of the people are having a hard time using it in many transactions. If bitcoin and ETH is new to them, as time passes by, they will become used to it but the thing that we need is adoption.
It is true that fluctuation can make us unsure and doubt those cryptocurrency like Bitcoin and ETH to regulate into our banks due to the risks. Plus, if this happens, government will do anything just to charge our transactions with taxes that they want to receive from us. No one is exempted from taxes once the government see that you are making money out of it.