How so? A lot of public APIs work this way, there is a free limit and you can do x requests and then if you want to do more you get the limit raised, I've used a bunch of APIs with a similar limit policy. The only problem is if GoDaddy refused to do this for Namecheap, which doesn't appear to be the case, it seems Namecheap complained publicly first and didn't contact GoDaddy at all.