In my opinion, the price will rise once they have completed the switch from PoW to PoS because people especially whales would like to bag as many ETH as possible to take advantage of the new PoS system.
I think the price is already rising. Of course they will soon dump it though. Anyways...
Will this affect the future of ETH much? Will ETH 2.0 using POS be as successful as we expected? What do you think about this, please share.
As to the future of ETH, this will greatly help the adoption to achieved sustainable ecosystem of cryptocurrency; first-hand, the DeFi craze as one of many examples crypto are capable of. I think the success rate matters on its price and it always favor those who are bag holders.