I'm not sure that's true. They don't reveal separate numbers for GCP, but they put it under "Google Cloud" umbrella with Google Docs and other products. The revenues are growing, but they're still losing money: https://www.crn.com/news/cloud/alphabet-earnings-google-clou...
Were these rumors based on anything other than "Google will shut it down"? It is always the top comment no matter which product or service we are talking about, so it doesn't mean anything
Google acquired ITA in 2010. Cape Air switched their entire flight reservation/departure control system to ITA/Google in 2012. Google discontinued the system in 2013.