Price out a 1TB ebs volume with similar performance to a local SSD.
For gp3, you only get 3000 IOPS and 125MBps throughout, without paying extra. That is orders of magnitude less than a local consumer-grade SSD.
Spec it up to 100k IOPS and 5000MBps and you're looking at nearly $800 a month. And that's still way less performance than you get with a local SSD.
Spec it up to 500k IOPS (approaching nvme SSD performance) and you're looking at $2500/month. Now you are on par with a consumer grade SSD.