Definitely not yet too late to invest in ethereum. There's a lot of development going to happen in the eth platform and I think its price in the market will still continue to rise. A lot of projects are using the ethereum platform and their success will be success of the eth platform also.
Yeah, look at how it still rally right now from $320 to now over $340. If anyone believes in ETH and its 2.0 then it is never too late to hold ETH because ETH will keep improving.