Recently there are tokens which became profitable for investors not because they have a strong community but the technology they are developing for their project and platform are good and the profitability for investors are well defined in the platform. Do you think ERC20 tokens can stand long term on its own even if they do not develop their own coin / blockchain?
Im not really sure if developing their own coin/blockchain is the biggest problem of ERC20 tokens for durability. There are still a lot of obstacles to face for endurance of the project and I think that would be the least of their problem.