the other aspect of this is both organizations/front offices and the players union all root for their "side" regardless of the team/player involved, and there's pressure for those parties not to "cave" from established or desired market values if the two sides can't come to an agreement.
Often times, prominent players and agents face pressure to go to arbitration no matter what in effort to re-establish market valuations for future arbitration cases/benchmarks for teams and players to negotiate from. I believe that was the case with Burnes and his representation, Kris Bryant/many players represented by Boras, etc.
At the end of the day, if the two sides can't agree and head to arbitration, neither should feel hurt about the rest of the process - because they know what it entails. The best scenario in almost all cases is for the sides to reach an agreement in between and avoid the hearing - but that also takes both sides being willing to do so. The Brewers typically have 1 or no players they take all the way to an arbitration hearing - it's not like they're lowballing everyone constantly.