Certainly this is a learning experience. You can choose to add raw footage to your contract for future clients or let these particular clients slide as an exception. I believe that clients have the right to their own raw footage, though they should pay an extra price since it is extra work to deliver the footage to them. You have to make sure you choose the right delivery method so the footage arrives to your client safely and quickly. Luckily, there are plenty of delivery options to choose from: https://valoso.com/blog/deliver-client-video-files/
It all depends on your business how you deal with raw footage, though keeping your options open expands your customer base.
Bobby Lin
Director
info@valoso.com
http://www.beta.valoso.com