> Without finite resources there is no longer any point to capitalism, a system which allocates finite resources.
That's just a nutty idea. There will always be scarcity of something. For instance, there's scarcity of specific people. If I didn't have finite resources, I'd love to pay Billy Joel to play a concert in a tiny bar for my friend's birthday party. But so would everybody else, so his price to do that is bid up to a level that some people can afford to hire him for a small gig, but most can't. Ditto for everybody else on the planet with specific unique skills. Front-row center seats for any form of live entertainment is a scarce resource - not everyone can have them at once.
Many other sorts of experiences will always be scarce. Like: I went to East Africa for a photo safari and got to see the rare black mountain gorillas of Rwanda in their native habitat - out in the forest rather than a cage in the zoo. If everybody did that the experience of hiking through virgin forest would be ruined - not to mention that there aren't enough gorillas to go around. So you have to pay for a tracking permit. How would that sort of scarcity go away?
> No more commercials, since that's pointless.
Much of the point of commercials is informational - they tell you or remind you that some product exists and what its characteristics are. It's true that it'd have to be something that's scarce, that you can't just print yourself at home. Such as: jungle safaris or Billy Joel tickets.
If the cost of energy and automation comes way down it is very very unlikely that people would just stop using money. It is likely you wouldn't need money for a lot of standard stuff. As society becomes richer, the set of things that aren't worth charging for increases. Free water and napkins and air conditioning and light and access to a toilet and wireless internet access are becoming pretty standard now in the first world, whereas in the third world all those things might be expensive or unavailable. Today you can get free food in the form of "free samples" at stores that hope you'll buy something. In the future, more basic food and shelter will become free, but the high-end stuff will always cost. However many buildings there are, not everyone can get the top-floor penthouse suite with a river view. Scarcity exists; it's an unavoidable fact of life.