This isn't a tiny change, if GCloud says "we quit in a year". That is a huge change. Applications using GCloud SDK for services suddenly need to be reworked and redrawn. That alone is a huge change for non-tech companies.

Some companies even need to check with the laws they reside in if the new cloud vendor can even be used.

Just work in any financial, medical, pharmaceutical, government-related... company and you'll understand that a year is nothing for these companies.