Personally, instead of smart bulbs, I'd use smart switches for automating lighting. There's no need for every bulb to be individually controlled and carry all of the overhead involved in that. On that note, I'd also love to see DC circuits that can take LED bulbs without needing a transformer for each bulb (which tends to be what causes it to fail IIRC).

Just tried looking at the state of the smart switch market and fuck Samsung for naming their app for transferring files from phone to PC "smart switch". Especially because there's plenty of ways to do that already that don't require a shitty Samsung app.

Excluding Samsung from the search, I'd suggest not looking for products directly but finding enthusiast communities that are building their own smart homes. There is more to it than just getting devices that don't rely on some specific company's web services. You'll need to also setup a controller/server, connect all of the devices to that, and then figure out how you want to interact with it (eg via phone, scheduling, voice commands, etc). I haven't done this myself, but I'm guessing all of these are solved problems, but doubt that anyone would call setting it all up easy.