Break em up, let the adtech corp buy the data from its various former sister companies and then see what the price of the data should be and which information is valuable and which isn't allowing platforms like YouTube to die in favor of less open platforms.
This opens the space to more profit and more large advertising companies to have access to my habits, sensitive information and more to do with as they please.
/s I don't know how to fix the issue, but it is clear several of alphabets ventures exist to feed the adtech beast. If the reallocation of these funds stops, several of the Google sisters will vanish in favor of what?