Why is on-chain storage difficult to popularize? The core issue is not technical feasibility, but rather economic accounting that doesn't add up. In reality, in most storage scenarios, blockchain solutions lag behind in three dimensions: exorbitant costs, insufficient performance, and blurry responsibility boundaries. On-chain storage essentially aims to solve trust issues—data rights confirmation and tamper-proofing. But how much does this need account for? Only applications with extreme reliability requirements are willing to pay. Once large-scale, high-frequency, low-cost storage needs are involved, on-chain solutions are quickly outperformed. This is why, no matter how powerful it is, it’s hard to become a mainstream choice—not because the technology is inadequate, but because the application scenarios themselves are too narrow.