Based on the information above describing the evolution of blockchain, the current landscape, and prospects for development, it seems that there are several key areas where fruitful dialogues between governments and private companies could focus on developing sensible blockchain regulation.
1. Promoting innovation while protecting consumers - Governments want to craft policies like safe harbor exemptions that allow entrepreneurs freedom to experiment in blockchain's early days without overly burdensome compliance dictates stifling progress. But equally important is formulating practical consumer protection given risks around data privacy, invest scams, and other malicious threats. Ongoing dialogue would determine sensible thresholds.
2. Standardization around technical protocols - To reach interoperability across different blockchain networks and ensure product stability, governments can work alongside industry trade groups and software developers to help establish uniform baseline standards around consensus mechanisms, wallet encryption, smart contract specifications etc. that balance flexibility with robustness.
3. Infrastructure investment frameworks - Mapping out roles for public and private players on projects like municipal service digitization, digital identity platforms for citizens, clearing and settlement network upgrades and even central bank digital currency integration could spur win-win infrastructure modernization.
4. Incentivizing sustainable innovation - Early blockchain networks consumed immense electricity via energy-intensive mining. Policymakers and industry can collaborate on housing mining facilities near renewable energy sources and funding next-gen efficiency improvements on proofs-of-stake over proof of-work chains.
With pragmatic dialogue and cooperation converting initially competing priorities into complementary policies, government regulators and private blockchain businesses seem well-positioned to unleash responsible yet transformational advancement.