That brand loyalty will remain even if Google kicks them off of their platform. Moreover, as more airlines get kicked off, Google is left with a smaller and smaller subset of airlines it is brokering tickets for.
Why in the world would you attack a business partner that brings you customers in such a strange way?
https://www.bts.gov/newsroom/2018-annual-and-4th-quarter-us-...
$100 loss per ticket
Total loss for Google: $100,000,000 Google's cash balance is $120,000,000,000 Google's operating income in 2018: $30,000,000,000
Co-ordination and system changes required to pull this trickery for airlines probably: $100,000,000 (and not even sure if it's legal)
Can't believe how naive hacker news is when it comes to business and change-management and legal and pretty much everything else