Pi Network, the viral tap-to-earn platform, is running out of steam as it marks five years of existence. Data shows that Google search terms for the keywords ‘Pi Network’ and ‘Pi coin’ have nosedived after peaking earlier this year. Social media mentions have also retreated sharply in the past few years. Additionally, the Pi Network IoU, which was unveiled – and disowned by the developers – has crashed to a record low and is seeing little to no interest among investors. A key concern among Pi pioneers is that the network has remained in an enclosed mainnet for many years, meaning that their ac…