Google was supposed to have the capacity to stick to a long-term vision because the founders retained preferred stock with (IIRC) 10x voting rights.
By that same token, there is no one to blame but the founders now that Google has turned into another mediocre big corporation without vision.
Like Apple, they have a vision for $$$
Every for profit cares about money. The issue is that Google has struggled to try to come up with a new product that convinced people to give it money.