I presume one reason could be at 40 you dont make the mistakes you made at 20. I was 20 once and when i built a product i tried to load it with features/options. Now at 30 i make things as simple as possible. I don’t discuss which DB to use. I straight away use SQL. I don’t discuss scaling issues. I dont bother about 80% of the issues i used to discuss when i was 20. I’m better of now.
My personal hunch is Google will still work on ‘air-gapped’ technology as this is critical for many non military applications as well. Google is eyeing to catch up with AWS in its cloud business and will take a leaf out of AWS’s GovCloud service and the money spinner it is for Amazon.