Imposing rookie salary caps

I watch teams time and again throw a large percentage of their salary space into the salary of their 1st round pick.  Of course we can all find players that deserve every penny that they receive, but then we can also find more players of the other type. 

Usually I am an ardent supporter of letting the market take care of itself, i.e- supply & demand, but on the matter of rookie salary caps I have, until now, been opposed to them.  When I look at rookie WR's getting Larry Fitz or Moss-type coin, I have some serious issues with that.  I know that the team exec's agree to the contracts, but they are also somewhat forced to pay according to previous contracts.  What sense does it make, however, to pay an unproven commodity according to what the highest paid active player is receiving?? 

I don't think any one component can be blamed for the current situation.  Agents are doing their job by trying to milk the team for as much as they can and team exec's are making sure to sign their pick or lose him.

Your thoughts?