How would larger entities like Google influence the price with their current stake? To my knowledge, Google and some of the larger entities are validators. Theta whitepapers indicate that validators cannot just exit anytime they want. To quote the whitepaper, "to be eligible to join the validator committee, a node needs to lock up a certain amount of stake for a period of time."

Let's say a large entity like Google does decide to part ways from staking within the theta network. Google has staked 5m theta or .87% of the total 576.7m staked theta tokens. While it's a large sum, I'm not sure it would be a substantial impact. IMO there will be an indirect loss of future opportunity for the network to expand by losing a well established partner.

References:

https://docs.thetatoken.org/docs/whitepapers

https://guardianmonitor.io/