The other consideration with arbitration is that, while it's rare that a contract is not signed before the hearing, on the rare occasion it does go to the hearing, a majority of those guys are gone within two years.
This doesn't include the 2019 hearings, but as of the 2017/18 off season, the player was on a new team in 21 of 27 arbitration cases since 2009, within 3 years, 16 in two years, and 14 of those within one year (from an Athletic article in July 2019 by Craig Custance). Arbitration hearings are naturally contentious - in this case, Montreal would go in saying how Domi doesn't deserve his ask and that can create some bad blood.