The amount of funding Wag has is (I'm guessing) too high for just a match-making service. They need to own the continued services or they risk severe devaluation (still guessing).
It's not really about right and wrong at the end of the day (though I'm obviously biased on what I think is right/wrong). It's about the contractors doing what is best for themselves. Because dog walking is personalized, local, and occurs on a regular schedule, it benefits contractors to use Wag to build up a trusted client base, and then start their own business and cut out Wag. This is the issue with making Uber for 'Traditional Service'. There are a million gotchas which can tank things. While I'm sure there are more services than just ride sharing which check all the right boxes, I really don't think dog walking is one of them.
I actually work for a services firm, and employees starting their own businesses is something we think about. We have a one year non-compete, but it doesn't mean all that much. Instead, it's really up to us to make sure our employees feel they are paid and treated fairly, so they don't have a reason to break out on their own.
That said, we have employees. Wag has contractors.
If we worked with a contractor (we do) and they stole one of our customers, we would certainly stop working with that contractor. That said, if they were able to steal our customer, then we clearly weren't adding enough value, which is on us.
That's the real issue. If contractors can just up and leave Wag with their client base, then Wag isn't adding enough value. Even if they win the legal battle, they still have a failed business model.
Edit: Well, failed business model for the amount of funding they have. If they only had a couple million dollars in funding, they could just pivot as I'd stated above.