Translate the following English sentence to French:
"By the same token, how can we ask the former monopolies to now become totally competitive, when they still have major investments to pay off, the product of yesterday' s political choices?"
Parallèlement, comment demander aux anciens monopoles d' assumer aujourd' hui une complète concurrence quand ils doivent continuer à amortir de lourds investissements, qui sont le produit de choix politiques d'hier ?