Infrequent updates will increase the value of PR

It seems to me that if Google is moving to quarterly PR updates, or even worse, that it will result in people placing even more value on PR. With monthly updates, it was relatively easy for a webmaster to bring a site quickly up to PR5, PR6, or so. With quarterly or less updates, you don’t see the updates for much longer. Waiting a month is much less painful, waiting three months or more might be intolerable. So, I think that webmasters will feel backed into a corner and try to buy an existing website with PR rather than waiting. Thus, driving the market value of those sites through the roof.