All Trend Followers?

Feedback from Fidelity employee:

“If every market participant were a trend follower fixated on price alone then the markets would never move. The participants that place a value on a financial instrument provide the opportunity for trend followers to participate in the game. They get the ball rolling so to speak.”

Maybe, but it would also depend on what lengths of trend were traded. But realistically, how could we ever have everyone trading as a trend follower? The psychology behind it all is not what some people will want in their lives. Most people want the easy road even if the perceived easy road is not so easy.

The follow-up question came next:

“Is it possible market volatility may some day be measured as a function of the number of trend followers in a market?”

How do you ever know who exactly is in a given market?