I agree that it's a great investment, and it will definitely get people on board for if the platform really takes off. I think they're definitely assuming that the majority of their people who pay the $400 aren't going to remain on the platform which is probably a safe bet, once they get somewhat established and have content that's more for the everyday person, I would probably recommend converting the lifetime license over to an extended long-term subscription.

So like a subscription that lasts five six years at like the price of 3 years of the monthly subscription price, I know if YouTube offered something like that I 1,000% would buy it in a heartbeat because I know that YouTube will still be around in that time frame and it's a no-brainer cuz I use it daily,

That being said if they did end up having a significant amount of people that are still using the lifetime subscription, they may revert to adding features to the monthly subscriptions like how Discord does that entice you to switch to a new plan with a retroactive sub and then you just can't switch back again.