1. Big tech will build tools which will enable anyone to make garbage content. This is already happening. They will not be in control of what gets generated since there are many competing alternative “big tech” providers which offer similar products with somewhat varying techniques.

2. There is not a simple way to effectively filter this content. This will be especially challenging for big tech to filter since LLM content will be flooding in from different providers, different models, different “guardrails”, etc. Even filtering mostly-human/traditionally-automated content today can be challenging. LLMs make the problem much harder for big tech to solve.

3. It’s not clear to me what “selling data” means in this context. Are you imagining advertising systems like we have today or something else?