This is possible but probably not this year because the bearish market is still in effect and we have 3 months left before next year. Hopefully Ethereum will be ATH again but i think $2,500 is very huge as there are lot of Altcoins that are being introduced every month like Libra which is also a market contender.
Actually you are just posting to increase your posts in signature campaign because this thread is 1 and a half years old and the OP asked whether Ethereum would reach $2500 last year or not. And It didn't about this year I am not even sure it would reach even $400 you are talking about $2500?