Yes, the delegates (or block producers) are getting paid like a bitcoin miner would. The top 21 in each block cycle are the only ones getting paid (for that block cycle). None of the other delegates or any of the people staking coins get paid by this method.

The active block producers that received the rewards have the option to do whatever they want with the generated revenue. Most of them will have written proposals offering profit sharing for each wallet holder that voted for them as a block producer, some public some private.

No, not every user's computer is dedicated to processing transactions, just the nodes. The users can stake their coins, and still get paid without having to use the computer power and electricity to compete for the block reward.

Reviewing Dan's presentations and interviews is something I've spent over 100 hours on in the past few months. It's exciting because each and every time I do, something becomes clearer to me.