Dual licensing is my original proposal but there is a third alternative: making Logseq Web version fully functional.
At the moment the new “DB version” works well in the browser and they specifically choose to adopt SQLite-WASM as DB to keep the Web version available.
They plan to make the DB version synced with the content of local text files, just like now. But the new architecture suggest me they want to make the Web version working fully as a cloud application by using Logseq Sync and no local file. This would make Logseq just as usable for some people as e.g. Notion.
By fully functional I mean it has to support all the features of the Desktop version, like plugins.