Painful situation you are in.
This seems like you have an idea that will generate money in the pocket of others.
But in the world we live in, value is completely disconnected from extracting money from it.
The only thing that matter is whether you are in the position where you can extract it.
These sort of "multiplier" add-ons ideas that 2x your revenue is great if your revenue is already 1M, but worthless is your revenue is 1k. All companies run on them, often generated by employees that only get a fixed amount for them.
If you have idea can generate enough of a competitive advantage, and difficult enough to replicate because it doesn't mesh well with current competitors and they would need a complete rewrite, then you have a niche you can specialize in, and to convince an investor you just show your competitors market value say you'll get x% of it if you have the resources to get over the entry barrier of re-implementing everything your competitors have but compatible the addition of your shiny idea. Depending on the equations it will be deemed economically feasible or not.
If the idea is easy to replicate by your competitors, well it's like in Go, where you play a stone inside the territory of the enemy that is immediately captured, you just wasted a move.
Often ideas that are not implemented can be for reasons that you don't perceive as an actor outside the industry, or it can be that it's already in your competitor territory and they have more pressing things to do.
Depending on your relative sizes, some times a partnership can be struck, or you can join them as an employee if you enjoy working in their solution space.
Some times these ideas are best kept dormant, waiting for a better time for them to flourish. For example once you have acquired enough reputation based on previous success, that you can get investors to invest in you rather than in your ideas.
Other times these ideas end-up in an open-source project where they contribute to lower the entry barrier that will make some economical equations more easy to solve.
But the most likely scenario, the default if you choose to do nothing, is that 5-10 years later, your would have been competitors will implement something that would look like what you have in mind and make a ton of money with it. But to help soften the blow you will remember that this value wasn't ever yours to begin with.