Those who are holding, trading and investing in XRP would not wish its death and above all, the team will not want that to happen. These are the only set of people that can trigger its death.
There are many coins that are dead and people will be holding those coins, i am not telling that XRP will be dead but the possibility of seeing a huge rally in the coin is highly unlike but there is a ton of liquidity in the exchanges.
A coin that has been operating for years is definitely an already established coin. Although, there are controversies on it, but that does not result into that.
A coin operating for years does not mean that it is established it all depends on the development team they have. If they are updating and taking care of the project then it will be fine.