Altcoin basically gets launched in this market via development and anyone can create their own altcoin using the services of waves or eth for erc20 tokens. One can also create an altcoin of their own without depending on the two platform mentioned when they have knowledge in computer language and setting up nodes. Altcoins basically are distributed via ICOs or any other sort of airdrops but everyone cannot just create a new altcoin and launch it somehow or else it would be a shitcoin. One first needs a concept in order to start an altcoin.