There's a regulation that is already functioning for the exchange sites, like in my local exchange,we were required to comply with he KYC Policy and fill up all the information that is necessary. With that rules, we have no choice but to follow and i guess it's just fine because exchange sites are legitimate and they are operating with the license granted by the government.
What I am afraid of to happen, is the time will come that our transaction will be tax..
It is possible that your transactions are already subject to tax, but that is not being enforced adequately.

Governments have an inbuilt idea of taxing everything, unless they specifically exempt certain things.