Take the percentage increase over the "classic" optimizer, multiply by total hardware costs of the hosting provider. The result is the dollar figure that it will save the company. Now your sales pitch is "Our software costs $X and will save you $Y > $X", which is a familiar and usually successful enterprise software pitch, since it is pure cost savings from the POV of the customer.

The tricky part is getting integration costs down to < $Y - $X, which is why the most successful enterprise products tend to be turnkey solutions like CloudFlare or AWS that build off already existing APIs. New programming languages usually fail because there's a massive hidden cost in learning the language and rebuilding the ecosystem that is greater than any potential savings the language could offer.