We live in different times now, you don't have to be on tv to do well. Who watches tv nowadays anyway? There's youtube and streaming platforms. They are established artists with lots of fans, they will support them. All three of them will be fine.
This, but also, they 100% know what they are doing and what to expect. There is no way they would do this without a plan and/or knowledge of the fact that SM is going to try and oppose them as best as possible.