[alistairSH]

Marginal changes. Most people need to fly the route they need to fly. If they're corporate, they have preferred airlines. If they're consumer, they want the lowest fare for the destination. Plus, even if you can filter by plane type, there's no guarantee that plane type is what shows up at the gate - 737NG and 737Max are roughly interchangeable for many routes. Swapping an Airbus for a Boeing would be very rare, but still not impossible (you just can't re-use the same flight crew).

[akie]

If I book a flight I will definitely try to avoid flying Boeing. If there's an alternative comparable flight with an Airbus, even if it's a bit more expensive, I will book it instead.

I'm sure I'm not the only one who takes Boeing's reputation into account here.

[sojournerc]

Counter-anecdote: for long haul international flights I seek out the B787 dreamliner because of how comfortable it is.

The question is ultimately whether it changes broad consumer behavior. No doubt it does for a few, but for most I imagine it simply doesn't weigh as high as cost or convenience