In the build-vs.-buy decision analysis: I always considered they'd explore buying UPS since they have a 4x market cap. Why build from scratch when you can acqui

In the build-vs.-buy decision analysis: I always considered they'd explore buying UPS since they have a 4x market cap. Why build from scratch when you can acquihire a logistics company with lots of experience and global reach? Sure there's always merging pains of integration, but it seems faster than just rediscovering hundreds of years of operational experience (and yes idiosyncrasies / bad habits / inefficiencies too). Edit: Amazon may not have enough cash to buy UPS, and would rather build what it needs, when it needs it.