I closed my G Suite account today because of Google’s announcement of AMP for Email. Luckily I didn’t have a huge Google presence in the first place beyond email which is easily IMAPed over to another server. Takeout allowed me to extract the rest: my docs as ODF, YouTube subs as RSS and contacts as ICS.
If anyone’s interested I wrote up my investigation into potential replacement mail services: http://www.robinwhittleton.com/2018/02/18/dropping-g-suite/ . In the end I went with Runbox, will see how they perform but I’m happy so far.