I'll have to get really big so I can delegate to more people and show them what it feels like!

Dolphins and Whales by no means need to lend or lease SP. The ones who do it for free are being responsible to the community and doing great things. The ones who charge for it are being opportunistic. They can and do earn the same way as everyone else, through posting, except they get more attention cause everyone wants a piece of their SP and they can also self vote to get on trending. They also get much bigger rewards for curation, a whale will take most of the curation reward on posts that they upvote.