Basically it's - we have these constantly on monitoring devices, phones, watches, alexa, video - we can collect constant human behavioural data - and given the right regulatory framework (ie this is medical data treat it like that) we should see enormous commonalities (correlations) between millions of people.

Psychology should then become a field of epidemiology- as opposed to limited behavioural studies in lab conditions.

Maybe psychology just has not had enough in the field data?