Adding a barrier of entry to something generally improves the quality of whatever it is.
(There have been some really interesting displays of this, like Robot 9k avoiding chat spam, or Kingdom of Loathing's 3-question "test" for joining global chat.)
Print fiction stories are higher average quality than web-published or fan-fiction, because they costs money to produce. Nobody prints and binds 500 words of unfinished, unedited rambling, but they certainly put it on AO3. But it turns out there's a lot of stuff that's interesting and valuable, yet too niche or awkwardly sized to justify printing.
So I guess there are two questions. First, does the barrier to entry improve the overall quality of the thing, or just weed out the weakest examples? Charging anyone who calls a meeting $10 would avoid some stupid meetings, but requiring an agenda can also improve worthwhile meetings. Second, are the marginal examples worth having? For a short story in a database, sure. For a five person meeting? Definitely not.
A lot of people do. They just don’t reach you (vs internet distribution).
As a positive incentive, a countering "attending" pool, also budgetable. Meetings with strong appeal would be compensated from that.
Not sure what to do with the Imaginary Meeting Points at the end of the year, though possibly use it as the basis of some sort of merit award or bonus.
For actually tracking Meeting Points, one option might be to make them a project metric? As in: "We predict our project will consume 21 Meeting Points, if we go over 25 that's a failure to be analyzed afterwards like overruning schedule or budget, if we're under 15 we're probably budgeting wrong".
I'm not saying the market/cost approach is necessarily the best or appropriate. But it's an interesting thought experiment to work through it.
Sometimes imposing arbitrary requirements (e.g., "have an agenda") is a cheaper way of effecting the same ends. Though Goodhart's Law is another pitfall.
NB: "vipers"?
Of course people shouldn't pay to do their work, so this must be taken from their allocated budget. If they don't have a budget they cannot invite anyone without the permission of someone who has a budget and think the meeting is a good idea.