Whilst this is true in theory, the experience of being a data centre customer, taking transit from one or two providers and peering with a handful of others is very different to being a user of a bulk cloud infrastructure provider.
I think the difference is automation, or rather lack of it. You build personal relationships with real people. Senior network engineers at the supplier don't consider it beneath them to ring up similarly competent people at the customer and chat directly.
In the past I've hosted kit on a larger scale for my businesses, but it seems you get the same personal experience as a tiny individual customer. Even with just a couple of racks of kit of for hobby projects and friends' stuff, I know the network engineers at the DC and transit providers and can email or call direct to discuss things when I need to.
More importantly, if (for example) one of my friends starts gobbling 10Gbps of $$$ transit because of a typo in a script, they ring my mobile to chuckle about it while we fix in realtime, rather than some automated process pulling the plug with the real engineers hiding behind support tickets and first-line support staff that can't string a sentence together.