Still a first and ridiculous.
Well, in mobile is pretty frequent to shut down a game during soft launch, before worldwide release. Or soon after worldwide release.
Soft launch means that in mobile gaming before releasing a game worldwide, they only release it in a few countries that are representative of the worldwide market for that genre, or at least representative of one of their main regions.
They release there and watch the game KPIs and feedback and make some tweaks and tests to see how the game will perform when scaled to the worldwide market. If the results aren't good enough, the game gets shut down. If it's good enough, it gets the worldwide release. If the results are somewhat ok but a bit under what they need, they try to do some tweaks to try to improve these areas, sometimes during a a few weeks, months, or in some case even years.
These changes may mean important changes in game features, restart the progression or important in-game economy changes that in some case may upset some players, so it's better to do it with a smaller userbase, before scaling up.
F2P also have important marketing costs for user acquisition costs plus server costs per player, so it's very important to make sure that they have a profitability per player. Because if not, if they scale up the number of players they also scale up the amount of loses. It is very complicated, specially now that with the new regulations they can't target their ads as accuratedly as they did in the past.