one thing that will be true this time will be that there will no anti-Amish people(which we currently are) this time as ASI(Few years after AGI) will end it all.
If you use digital ocean i guarantee your cost will be less than $100k.
In my last job, We used AWS for a big website, our spending cost were $10k, switched to digitalocean first bill was close to $1500, with around same users.
our site was related to news and there was a forum too that's why the cost were high.