That's what happens when you build your channel around giveaways. Jenn and English Simmer did that and people only stuck around & subbed to be part of the giveaways. Some people used second, third or more accounts for more entries and when the giveaways stopped, they left. The reason Jenn's channel died is because she doesn't do anything interesting with her content anymore. At one point during her Springston Legacy, she built a prison and had a whole storyline about being in prison. Look at her content now and it is just the same boring, lazy content everyone makes. English Simmer's channel died for a few reasons; trying to do variety gaming, her whole personality based around being gay, not making anything interesting or different. Their channels are basically on life support until EA gives them something new. I've also noticed this trend toward mods or builds instead of giving their audience what they want, let's plays. You don't give them what they want, they go somewhere else.
"Let's Plays are dead." Yeah, maybe for the boring has-beens who won't put in any effort.