A big no, there are not any alt that has enough possible and attributes to beat the bitcoin. As well as bitcoin end users and marketcap is genuinely large than most of the altcoins which displays the adoption of bitcoin is extremely large than any alts. No person can forecast the potential even so bitcoin could continue being amount one particular crypto for up coming couple of a long time.
Yes there is possibility of another cryptocurrency because people like new things, people love to invest in new currency as now bitcoin is on the top thats why they are still investing in bitcoin but altcoin importance is increasing now days and many people change their mind to altcoin which make really problem to bitcoin.