Agreed re Tableau being a competitor. But I'm not surprised they're not a partner. Last quote we got from Tableau for desktop was $2k. This comes in at around $200/year. That is probably where the "1/10th of the cost of traditional BI solutions" comes from at the top of the home page.
Tableau are pushing their web system over their desktop tools. It is perfectly possible to use the free reader to consume data without needing hundreds of licences for a cloud product or the full edition.
It's possible, but last time when I used, it's pretty limited. You would need to manually feed local data and re-sync it when it changes. Nothing something you want to do a lot.
