Can't RESCENE just aim for FIFTY FIFTY level even if their momentum drops?

They have a male-dominated fanbase similar to FIFTY FIFTY, but hasn't FIFTY FIFTY been active for 7-8 years now?
They still seem quite popular though.
Even if RESCENE's popularity decreases, if they promote like FIFTY FIFTY, wouldn't they be able to keep earning decent money and stay active even in their 7th or 8th year? Even if they don't become a massive hit.