They should be better equipped to detect and prevent the abuse. It's an order of magnitude higher request volume for phone #s located in remote regions of the world. Twilio knows full-well where those numbers go, and can see them being abused simultaneously across many customers. I don't possess the same ability to know this... unless I use Twilio to run a reverse-lookup, which would of course still incur a cost.
Yes, it would be helpful if they helped fight abuse, but that is not necessary of them. Having the capability is a competitive advantage so it would be in their interest to invest in it.
