- They don't have significantly different training datasets (it's probably 99% the web).
- They don't have significantly different algorithms
- A big advantage that traditional Google search has the sheer amount of search traffic. They will be able to induce similar traffic (and even repurpose search traffic) to validate their LLMs. OpenAI has the same advantage with ChatGPT thanks being first out of the gate.
- Compute power and efficiency: both OpenAI and Google have access to effectively infinite capacity vs their competitors making search-adjacent products.
Most significantly, OpenAI/ChatGPT has won the LLM branding race, just like Google won the traditional search branding race.