I’m not sure ‘webnovels’ is a useful category. I’ve read a good number of serialized novels, especially on Royal Road, where there is a 90% overlap with LitRPG.
On the one hand, web novels are different.
They are usually published one chapter at a time. This gives the story a different cadence from that of books that are published one novel at a time. It also tends to give the author reduced opportunities for planning and outlining.
Web novels, like political careers, tend to end in death or failure. Most are dropped when the author loses heart or runs out of patience or time. This is different from a series of novels that stops at volume ten or eleven or what-have-you.
The realities of monetization lead many web novels that don't sputter out to Kindle Unlimited - at which point they stop being available at their original publishing sites.