No real benefit, but we do also offer other apps. And I know there's an ethical component here, where we might poach customers from the FOSS project's own managed hosting. That's not why I built Cloudplane, quite the opposite; the intention is to support FOSS sustainability by reinvesting parts of our revenue into the ecosystem.
You should partner with the FOSS/COSS companies. I work at one. we self-host our SaaS offering, but if we could offer to our self-hoster customers a self-hosted instance using cloudplane I think you would have much business in the future.
But as far I can see your pricing is cheaper? There is no way that I have 10k of monthly visits (9 USD). And that is the lowest level from Plausible. I can see that your cheapest offer is 3USD. I have about 500 visitors per month so I guess the smallest of your servers should be fine?
We are of course cheaper, but paying for Plausible also supports their development. The choice is yours. ;)
Note that Plausible is not available on our lowest plan, the dependency on Clickhouse makes that not economical for us. Sharing Clickhouse instances to bring the cost down is something we might look into in the future.