The first build is the expensive one, and it's expensive for a reason. It pays for the data layer, the integrations into the tools you already run, and the intelligence layer that everything else sits on top of. That foundation gets built once.
Every system after that plugs into what already exists. The second costs less than the first. The third costs less again. You're not paying to lay the plumbing each time — you're adding to a hub that's already standing.
It compounds hardest for owners running more than one company. Build the intelligence hub once, then deploy the same operation across every business you own. You pay for the foundation a single time.