Generally the elastic or usage/volumetric type billing structures are used on SaaS/cloud products, not on-prem.
Although it's entirely possible that elasticsearch, and other vendors in the space use that pricing model for their on-prem customers.
Regardless, that's even more of a reason why it would be very difficult to give a quote without being first having a presales meeting with a solution architect or knowledgeable rep.
No, because the barrier to entry for car manufacturing is significant.
If the other major car manufacturers weren't already working a similar advertising system/platform, they've already scheduled multiple meetings to catch up.
This isn't a problem that will be solved by the market and competition, only by regulation.
And I don't consider tech savvy users learning how to hack and disable these features as a resolution, it's just mitigation.