You’ve asked for hard data, and then make a contrary assertion for which you have no data either. No, glancing at a website periodically doesn’t count.
Regardless, are you really going to double-down on Hollywood producing more original stories than ever?
Hollywood studios today are in the business of SASOR (sequels, adaptations, Spin-offs, Remakes). That is their primary business model. They may buy up an original productions at festivals like Sundance & SXSW, but that is only for distribution and a light spend on P&A.
You have presented no data to back up you claim that greater than 50% of people (popular consensus) believe Hollywood produces less original content than at some time in the past. Even if you did, the fact that most people believe something is distinct from that thing actually being true.
For what it’s worth, my intuition says you’re right. But intuition is not data. Confirmation bias is real...