What "some third party SDK's" are you talking about, and why would Google ban them?
And what is the relation with "collecting data"?
And what in the book is it you don't like?
I know, a lot has been said now about adding some 3rd party SDK to your app, as Google started banning a lot of apps or developers recently. But tbh, most of the cases i have seen, were developers fault.
As i have read, if your app has been removed due to having 3rd party SDK, its basically, coz you havent mentioned it properly in TOS. You had to change your TOS with providing info of what you have added, and what you are collecting, and then you could have reuploaded the app without the fear of getting banned. Most of developers havent done that, and just reuploaded apps back, without clearing up anything, which resulted in ban from store.
TL;DR, do you think its still profitable doing that, if you make all the TOS clear, and do everything “by the book”?