The only problem though is-- where does this leave Project Fi users?
As of this writing, Google devices, such as the Pixel and Pixel XL, no longer come equipped with Hangouts pre-installed into the device unless buying through Project Fi. But as it stands right now, there are still so many Project Fi users who rely on Hangouts for their daily communication. Once Hangouts has been fully shifted to the enterprise market, Google will need to have a solution available for its stream of Project Fi users. Thankfully, Google may already be a couple of steps ahead of this.
According to a source quoted by 9to5Google, there are rumors suggesting that Google plans to integrate Project Fi into Google Voice in the future. Asked about this, Google neither denied or confirmed the rumor. The company however, said they were actively "working on a solution" knowing that a lot of Project Fi customers use Hangouts. The Google Voice integration could just be that solution.