It also explicitly requires the parties and candidates to think beyond the current election cycle. That behavior is not in evidence for at least one major part

It also explicitly requires the parties and candidates to think beyond the current election cycle. That behavior is not in evidence for at least one major party in the U.S. A candidate's personal expectation of costs must also be factored in. When a candidate faces criminal charges (to pick an example totally out of the blue) if they lose but can eliminate those if they win, the calculus changes for them.