The end of an era is coming soon as PewDiePie is only an estimated 2 weeks away from being overtaken by T-Series, he might hit 67 million subscribers before that happens and even when it does he will still be the most subscribed individual, but it will be the end of an era. PewDiePie has been on top since the 22nd of December 2013 after some back-and-forths with Youtube Spotlight, T-Series has been on a rapid increase since 2017, getting 100,000 subscribers nearly every day, even overtaking PewDiePie as the most watched channel on YouTube on the 16th of February, 2017.
This is the end of an era since the adpocalypse really hurt independent creators, paving the way for a more corporate YouTube in where many content creators need to find parternships just to break even with what they had, this is inevitable now, we are living in the final weeks of PewDiePie being #1 on YouTube, even if he will still be the most subscribed individual on YouTube.
It is estimated that T-Series will take over as the most subscribed channel on YouTube on the 27th of October, 2018, ending a 1700+ day streak of PewDiePie being the most subscribed channel on Youtube.