It doesn't need to be at a consumer price point first, it needs to replace a human at an existing warehouse or manufacturing role first, and that's achievable in the next two years at this point.
When you have arms that can reach into the dishwasher, you're also going to want them to put away your dishes. And so suddenly they need to get up high. And you're not going to have a SECOND set of arms at your washer/dryer to fold laundry, you're just going to buy a second DLC for your existing robot. And it needs to get between those places, so if you have stairs, wheels don't cut it. You need a bipedal robot very quickly.
Stair climbing systems that work using wheels exist. Google stair climbing wheelchairs for a few examples.
Why not buy a second set of arms instead of legs or just a set a wheels?
Ok, so your idea is to sell a machine without software and then hand wave the software part away by saying it will be released at a later date? Sounds like a scam to me. You'll just end up with another AMD situation where the company is only interested in selling the hardware and has zero interest in developing the software, because it costs money and can only ever generate revenue by selling more hardware, which will make the hardware focused company feel vindicated in deciding to not put effort into the software.