A real opportunity
Modern web browsers all support 3D nowadays. This creates a real opportunity to build 3D tools that are useful for both professionals and hobbyists. The potential is great because the web is the most accessible platform for interactive 3D. You don't need to download an app to edit or just simply view the models you want. Everything works in every day browser.
There are many individuals and teams running projects focused on developing their own online 3D modeling tools across the internet.
Some of them are leaders targeting the commercial market, even if they are currently free to use or offer trial versions for a couple of months, sometimes with the possibility to extend this period. We all know the names, so let's not advertise them here.
Others are projects with a few noticeable characteristics: they are open source, often pet projects, and tend to struggle with usability.
Many of these web tools fail to implement intuitive navigation, making it difficult for users to interact with the UI.
Many web 3D projects prioritize visual over functional clarity. Constant animations or non standard interfaces can overwhelm users, especially those who are used to professional-grade tools with known workflows.
There are projects that are the opposite of those described in the previous paragraph. Instead of using non-standard interfaces, they try to be as close as possible to desktop pro-tools. They are trying to push web technologies further and show visitors what browser-based tech can really do. And the projects became overengineered.
The problems are clear. All that remains is to avoid repeating the same mistakes.