Camilo

Oh yes every place that sells 700c tires will have a wide variety of widths if you look.

Iride01 

I have bad roads I ride around here. Doesn't keep me from riding them when I need to. I go around the pot holes, avoid the deep cracks that would rip my sidewalls to shreds and either bunny hop or slow way down for things that might pinch flat a tire/tube. Even my regular route has plenty of these things. I just avoid them and stay on the smooth asphalt.

I think most new road and gravel bikes will come with wheels that probably only need a valve stem for tubeless wheels and some sealant when you decide to put a tubeless tire on it.

Many rims of any sort will only need some proper tubeless tape in addition to those things. There are some tubeless tires that need special rims made exclusively for them. And of course there is, like in all things the arguments for which tubeless system is better.

However a tubeless person should really answer this question. I've not done tubeless and that is just my take on what I've investigated for if I ever do go tubeless.

eduskator

Your rims should be rated for the tires you're using (vice versa) so yes, both need to be labelled as TL ready/approved/whatever.

I guess you could run a TL setup on non-TL rims, but I wouldn't even dare to try.