Need advise regarding scope for cloud cost monitoring & optimization tool.

I have been thinking about developing a tool that can show statistics like below to show for all my cloud or any infra that are hosted for a company. I know each cloud have their own way to show this but do we already have a common tool for this, that can show the details for all servers(multi-cloud)? Will this be a worthy product? Can someone give me some suggestions please.

"Here's what changed this month."

+2 services ADDED : analytics-01 & app-02 came online.

WASTE: app-01 is stopped, still billing — $374/mo.

RIGHT-SIZE: db-01 idles at 16% CPU p95 — downsize.