Yeah, I agree. I think a lot of big players will be disrupted, and some put out of business by blockchain tech, but I think Google, Amazon and Facebook are too smart & savvy. I don't know how, and I've not given it much thought, but I'm sure they'll be looking at ways to adapt.
Amazon will take crypto payments at some point, but I'm sure they'll be looking at how to reduce the risk of blockchain, or will join the party in some way. Same for Google. They know it's here, they know it's threat and they'll have something up their sleeves to adapt to the new environment, I'm sure.