It's not an individual that is making these decisions, it's a complicated set of groups, technologies, and directions.
Does that mean having bad user experiences is justified? No. But it's incredibly complicated to tie together such large projects (at a complexity most people won't fathom) and do it well.
I would look at it the other way and be amazed how good some of the things work.
Also, it's perfectly acceptable to enter new markets through acquisitions and apply Google's innovations there. That is a form of innovation in my opinion.
Does that mean having bad user experiences is justified? No. But it's incredibly complicated to tie together such large projects (at a complexity most people won't fathom) and do it well.
I would look at it the other way and be amazed how good some of the things work.