First, it depends on what you mean by “locked to a particular person.”   Typical of DB type stuff having two people editing the same record (in this case the same page) at the same time is typically taken to not be a good thing.  Assuming you are not suggesting doing away with the typical DB convention of only having one person editing a record (the same page) at a given time, then the remaining problem is “fix thrashing” which we already see happening some in DP land.  IE P1 introduces a fix, and then P2 says no *I* think it should be fixed this way and then P3 says no *I* think it should be fixed THIS way.  At least in DP land P1, P2, and P3 are different people, so the “fix” may not converge but at least its not thrashing – meaning that there is only three rounds of time-wasting going on.  With roundlessness you could potentially run into “proofer wars.”  Well, actually in DP land you can run into proofer wars too – trust me – its just that the proofers have to run to a “higher authority” to engage in fix thrashing – the DP system doesn’t seem to me to directly allow proofer wars to happen.