No mention of maintenance costs in the buying considerations is odd. Having to maintain 2 manufacturers planes must be very costly. 2 lots of inventory and specialized tools along with more training must be a major headache. The only upside I see is they will get more leverage when negotiating the purchase price. Unfortunately people who deal with purchasing large items are often clueless about whole life costs. Saving a few million on a purchase often ends up costing dearly in the long run.
I have started to choose who I fly with by taking into account the make of the plane. Price and duration are still the main consideration but increasingly I want to avoid anything American due to the antics of the orange, wannabe, dictator and Boeing's worrying reputation.