As good as this sounds this doesn't happen. If done properly, you keep the opponent away from areas you'd like to set up emplacements on with Vickers and Tommies. Once you force a retreat you are free to put up an emplacement. Leaving a properly placed emplacement alone is not an option, especially on smaller maps where single emplacements are easier able to cover VPs. Not to mention the abundance of maps currently in the map pool that feature plenty of shotblockers which in turn promote campy play; not that there's anything wrong with campy play if that's your thing, but emplacements are simply too cost effective at the moment and shouldn't be dominating the current meta as they are.
As good as it sounds, it is
exactly what happens. This is why, when 1300 euros were on the line in the ESL (multiple monthly salaries for some East-European countries), nobody went for emplacements.
Going bofors in 1v1 is extremely risky. You give away the initiative to your opponent and then you can only pray that he launches a few small-scale assaults onto your bofors; which will naturally fail as bofors are designed to stop small scale assaults. By going bofors, you completely give away your offensive capabilities as you just locked yourself out of the AEC, which is your only early game offensive option against a player who is smart enough to get a 222 when he sees a bofors.
In 1v1, dealing with bofors is simply a L2P issue. Once you figured out the trick, you will win every time. The bofors only counters players who have the wrong mind-set and think they need to take down the bofors ASAP.