Excellent points Ardath!
Frustrating yes! Surprising, no.
In my experience, the vast majority of organizations still consider marketing to be an esoteric function of branding, preparing collateral, etc. that really has no direct link to sales or the bottom line.
How could this be? I think too many marketing folks like it that way. There's really little accountability.
As soon as you take ownership of lead generation for the purpose of driving sales, you are just as accountable as the sales team. As someone who's been selling for years, I can assure you that accountability scares a lot of people.
There are some brave marketing souls that have stepped up. In some businesses, the opportunities to generate high quality leads via search ads, social media, lead nurturing campaigns, etc. is just too great to ignore.
These are not skills most sales people have nor do we want sales people spending their time on a computer generally.
The opportunity for marketing professionals to enhance their value to the organization by taking ownership of lead generation is tremendous and ripe.