Despite having operable smart contract blockchains like Ethereum in production, projects have struggled with product-market fit for decentralized applications in recent years. The industry might simply be too early. If we look back to how “mobile applications” progressed, they didn’t really solidify into a multi-billion dollar business until their infrastructure — smartphones like iPhone and mobile operating systems like Android — became extremely accessible, usable, and affordable. In the same way, blockchain infrastructure in the form of scalable blockchains, user-friendly wallet experiences, node and data services, and financial industry support for digital assets, might be a prerequisite to building decentralized applications at a rate which produces mainstream market fit. This kind of infrastructural progress was the subject of 2019.