Any thing can run on blockchain, ranging from the school system,  health care, even the government parastals.
Does it involve record keeping? Then blockchain could be used to make it better. To me this is the greatest innovation of our time, ahead of internet it self.
I am positive some agencies where hardly convinced before adopting the .com internet domain.

They are no independent analytic tools that I know. One way to measure your reach as an advertisers is the system provided by the advertising agency which could be biased.

Imagine a system where you are rewarded to provide your info for an Ad click. Sounds pretty interesting to me and could be used to monitor Bot clicks among others.

How to stop Ad fraud and other loopholes created by third party involvement in digital advertising.

To me best solution remains blockchain which is obviously a great innovation. 

What are your suggestions?