I feel like most discussions of this ignore the downsides. You can increase the blocksize which will result in a higher theoretical transaction rate, but then y

I feel like most discussions of this ignore the downsides. You can increase the blocksize which will result in a higher theoretical transaction rate, but then you're burning more resources on orphan blocks , DDoS, etc. So while you can increase it, there are serious downsides to doing so past a certain point which still ends up being a lot lower than what's needed to have the acceptance level of Paypal.