[srmarm]

The thing is the selling point is it ties together loads of different systems and is open source. That is also it's weakness and I'd not want to professionally set up a system and then be at the mercy of third party integrations and have to explain that to the client and support it if it fails.

Furthermore a lot of this you'll need physical access for which limits the scope of remote support.

Once you're paying someone professional rates than the cost of the parts becomes less relevant.

I don't think HA is that unreliable itself these days but if I were charging £££ to install I'd probably want to be able to have a company with an SLA to fall back on.

I suspect there are people using it professionally however they'll be selling automation solutions and just use HA in the background rather than exposing HA to the end user.