Meta released a lot of high quality AI research and models (Llama) and tools (PyTorch) as open source. So instead of paying OpenAI for access to their large language model, you can just download a LLM from Meta and use it for free. So in effect, they are flooding the market with free alternatives to paid Microsoft/Google/OpenAI offerings.

Commoditize their complements: https://www.joelonsoftware.com/2002/06/12/strategy-letter-v/

Probably that Meta would rather lift small players to crush established companies (Snap has 330M+ DAU) than allow them to carve into Meta's profits.

Will be interested to see down the line how any startups nowadays will fare with Meta.