Maybe not Movim specifically, but there are so many developers and companies behind the decentralization movement now that in my opinion it's safe to say decentralization will take over in a few years. Hopefully full decentralization (like Secure Scuttlebutt) where every node has the same power, not federation where you have super nodes, but even that would be a huge improvement. Even the creator of the World Wide Web, Tim Berners-Lee is part of the movement and browser vendors like Firefox and Brave have shown interest in adding decentralization technology like IPFS and Dat to the browser.

I think the only reason why decentralization has not taken off yet is that the internet in general has moved from the desktop to mobile devices, mainly smartphones and full decentralization is a lot harder on a smartphone. But it does work, Secure Scuttlebutt has a mobile app now called Manyverse, ZeroNet has been running on phones for years... It just all needs a bit more work, but we're getting really close I believe.