For plain run-of-the-mill pano tours you might be correct. I think many real estate agent would jump at the chance to cut costs on virtual tours, even if this means less custom features and a lesser quality. I mean, streetview is the standards nowadays, so everything better than that will be seen as hi-quality.
And let's be honest, 99% of the real estate tours you find are all the same, so it is actually surprising it took so long for some method to come along and take out the photographer/programmer entirely. The same thing happened to most traditional real estate photographers some time ago! The agent just walks along blissfully with a 5D mark III and a beginners evening course toggin and it's good enough apparently!
I think it is important for tour creators to start understanding that the product isn't the panorama or even the tour. A panorama or tour alone is, at best, just a novelty. The panorama should be considered the platform or the canvas on which you project content in such a way that the content makes sense.
Some projects do this, most don't.. Probably because there is a lot of work involved with building such a project and generally the tools that are available for quickly and intuitively adding content proper to a panorama context are really rudimentary and generally suck. Frankly I'm often gobsmacked by some people who go around telling how long it takes to build and tweak a panotour on-top of the image processing and seeming they're proud of it as well! It's not something good, it simply is the lack of a pro tool-set on the output end.
Competing with something like Matterport or in any market that basically wants rooms with arrows will be hard enough, but without a professional tool-chain, I can't imagine how real estate virtual tour operators will not suffer the same fate as the traditional real estate protog.
Well, that probably ruffled some feathers, but mind it's all for the sake of keeping this gig going!...
Virtual Pete is right, if you want to compete with the trend that Matterport represents, you will have to figure out what you can do with some rooms with arrow that an automated idiot-proof concept can't.