good long term value here..I know of a person who uses wix to promote whatever she does and she's a free user.
However, as this commentator mentions on S/A -- also holds true..
"Anyone who is willing to pay money for a website each month is willing to shop around .... which is why Wix has converted so few of the registered accounts into paid accounts. When you shop around - you realize there are better values and better options than Wix. Period. Wix is for beginners - and when those beginners get a little more advanced, they move to another provider or just use the site for free."
Conclusion - They must find a way to 'glue' their users - hooked with Wix. But with so many users..they should find a way or 2 to make money out of their service -either through advertisement or through regular subscription.