How is the statement discriminatory?
If a company decided to start a sharing economy-based babysitting service, but doesn't have the requisite resources (or training/certification among workers) to look after special needs children, it's okay for them to not cater to those individuals.
It's not as though they have the ability and are denying service - they are choosing not to develop a product or service with accessibility features. I can entertain a normative argument that it's ethically wrong to allow companies to operate in this way, but this is not legally considered discrimination.
I do think that a certain critical mass requires this to be reconsidered, because private companies without as much regulation could displace people who enjoyed accessibility features under older, more established and regulated companies. That said, there are many products and services on the market today which simply cannot be used by handicapped individuals, and for many companies making these products it would be strictly impossible for them to profitably offer a more accessible version.
EDIT: Initially I said taxi cabs are not required to be wheelchair accessible and made an Uber/Lyft comparison. After looking into it, it seems I'm wrong - NYC taxi cabs, at least, offer wheelchair accessibility, you just need to call for it through dispatch as not every vehicle is properly equipped.