Yeh government from any country at current situation will not allow anyone to tackle his baking (fiat) system because it's the way through which government hold thier grip on citizen, where you will be dependent on government and there will be no financial freedom and privacy due to this you will be investigated for any big transaction. While Bitcoin solved all of these problems and provide you financial freedom due to which government will lose grip from him so currently it's not possible but later after huge inflation may be government allow such steps.

While salaries in Bitcoin is far good in such cases but while in other cases it harm you financially because Bitcoin has so much volatility and some time providing given amount of salary to all of your clients is not possible by time of dump in Bitcoin price also all those clients which has limited budget for thier need will not fullfill because of salary reduction due to Bitcoin price dump, so it's not a good advice for such business to provide salary in Bitcoin which has limited budget for clients salaries.