Anecdotally, my friends from India make trips to SV just for in-person interactions. Their claim is that India has good tech talent and a somewhat decent tech job scene, but a bleeding edge expertise (eg. LLMs) can only be found in SV. That doesn't mean there are no experts in India, but they are very few and scattered around. Whereas you can come to SV for a week, attend 2-3 meetups each in SF / Palo Alto coupled with some other expo / conference and you get a great bang for the buck on your trip.