The ‘You built it, you own it!’ approach is to make people responsible for things they built and avoid situations where one team leaves in a world without consequences (as somebody else has to deal with a poorly created solution). That is also one silo less, less communication barriers, and overall, better experience for solution users.
P/S/TP (I that notation!) recognises the desperate need to rebuild things with a slightly different purpose and a completely different attitude in mind. It recognises that when market characteristics are about the change, the group of current owners may not be the best to adapt - sometimes because they do not have right skills, risk appetite, or are just to focus on what worked so far, without understanding how expectations has changed.
In such situation, it may be worth to form a new team better suited for the new set of requirements. The new team builds a new solution and owns it (until the next transition).
However, to avoid conflicts (and this is most difficult thing), you have to have mechanisms that will reduce the stress of having a solution taken away. Pioneers and Settlers will probably look for a new job unless they understand that their role is to build and drive a solution up to a certain level of maturity, and that they are expected to do it again and again.