You got... entirely the wrong message.

The answer to "this thing is horrendously inefficient because of misaligned incentives" isn't to be frugal with the thing, but to make it efficient, ideally by aligning incentives.

Open source monitoring software will eventually blow the proprietary products out of the water because when you're running something yourself, the cost per gigabyte is now just your own cost and not a profit centre line item for someone else.

Unless you start attaching tags to metrics and allow engineers to explode cardinality of the metrics. Then your pockets need to be deep.