I think you are taking my reply completely out of context.
My comment was a response to someone else claiming that an open-source Homey-like platform would have a problem because it could not get Matter certification.
Your own GitHub application with zero stars is therefore not really a useful comparison. Nobody claimed that every hobby project or every smart-home application needs Matter certification in order to work.
Of course Matter certification costs money. But we are not talking about astronomical amounts or a fee for every installed hub.
For a serious community project, the cost is quite manageable. A community of 15,000 users could probably fund a certification with something in the region of a one-time $1 contribution per user, depending on the final lab costs.
And there is an even more important point:
You do not necessarily have to build and certify your own Matter stack from scratch.
The Open Home Foundation Matter Server used by Home Assistant has its own Matter certification, independent of Home Assistant itself, and it is explicitly designed so that other projects can use it as well.
So an open-source smart-home project could build on an already certified Matter Server instead of reinventing and recertifying the entire Matter implementation.
And your repeated reference to Home Assistant’s supposedly “ridiculously overpriced cloud subscription” has no real relevance here either.
The subscription is optional. Home Assistant does not require it to function, and nobody is forced to pay for it.
If a serious open-source Homey alternative ever attracted a sufficiently large community, I see no reason why it could not also attract voluntary financial contributors — whether through one-time donations, recurring subscriptions, sponsorships, crowdfunding or any other model.
That is how many open-source projects are financed.
So yes, certification requires money, organisation, testing and maintenance.
But neither the cost of Matter certification nor the fact that a project is open source makes such a platform unrealistic.
Edit: We talked about the new “Craft” wave. Once these apps are ready for everyday use, I’d happily pay a small monthly fee, say €5, to support their development. Together they cover most of what Adobe and Microsoft Office offer, and people already pay those two companies a lot of money. So why wouldn’t they pay a fraction of that to keep an open-source alternative alive?
There’s already a model that proves it works: I pay for Nabu Casa mainly to support Home Assistant, which itself is free. Bundle a few useful extras like sync, collaboration or support, and a small subscription could make projects like this sustainable.
And, the Craft apps already have a paid service. AI generated images. Projects can stay free and be financed by optional services, no user must use.