Cassini is more than just a "couple dozen" scientists. I seem to recall there were roughly a thousand people working on the mission in 2004, when Cassini/Huygens got to Saturn. I suspect that number is actually larger now, as more and more people are working on the data. Not all of them are full time, and some of the original engineers would have moved on (don't need to build or maintain equipment), but there are a lot of people, computers, storage and transmission equipment to fund.

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"What do you care what other people think?" -- Richard Feynman
"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." -- Feynman, at the conclusion of his Challenger report