You would think so, but many folks are under the impression that you have to get special pots and pans for it or that they are expensive - which isn't the case. Many will find that their current pans will, indeed, work on the induction hobs.

As far as the second... yes and no. IIRC, some of the reason for the decrease in enamel cookware was that it couldn't be used on some burners. The same goes with glass saucepans: I don't think you are supposed to use them with gas cook tops - even though these were popular for some time. Making sure the material was suitable for your cooking surface has been a concern for quite some time. It just happens that most cookware can be used on most surfaces.