I think you're failing to understand the meaning and the point of "building your own datacenter".
Yes, you can talk about your office all you'd like. Much like OP can talk about there server farm and their backend infrastructure.
What you cannot talk about is your own office center. You do not own it. You rent office space. You only have a small fraction of the work required to operate an office, because you effectively offloaded the hard part to your landlord.
For people who have taken empty lots and constructed new data centers (ie, the whole building) on them from scratch, the phrase "building a datacenter" involves a nonzero amount of concrete.
OP seems to have built out a data hall - which is still a cool thing in its own right! - but for someone like me who's interested in "baking an apple pie from scratch", the mismatch between the title and the content was slightly disappointing.
I say this not merely to be a pompous smartass but also because it illustrates and echoes the very same problem the top-level comment embodies, viz. that some folks struggle with vernacular, nonliteral, imprecise, and nonlinear language constructs. Yet grasping this thistle to glark one's grok remains parcel-and-part of comprehension and complaining about it won't remeaningify the barb'd disapprehensible.
Your disappointment, nevertheless, seems reasonable, because the outcome was, after all, a bait-and-route.