also how far you can get with a single machine has changed massively in the past 15 years. 15 years ago a (really beefy) single machine meant 8 cores with 256GB ram and a couple TB of storage. Now a single machine can be 256 cores on 8TB of ram and a PB of storage.
Exactly, and the performance of consumer tech is wildly faster. Eg, a Ryzen 5825U mini pc with 16GB memory is ~$250USD with 512GB nvme. That thing will outperform of 14 core Xeon from ~2016 on multicore workloads and absolutely thrash it in single thread. Yes lack of ECC is not good for any serious workload, but great for lower environments/testing/prototyping, and it sips power at ~50W full tilt.
I saw a twitter thread recently where someone tried to make this point to someone shilling AWS spaghetti architectures. They were subsequently dog-piled into oblivion but the mental gymnastics people can do around this subject is a sight to behold.
Simplicity is uncomfortable to a lot of people when they're used to doing things the hard way.