They often do! Hobby drones, GRBL hobby CNCs, hobby micrcontrollers and SBCs, open-source SDR projects, etc. will often exceed the performance of devices that were ITAR restricted a decade or two ago. And "a decade or two ago" is a generous expectation for lethargic legislative, regulatory, or judicial systems to evolve.
Yes, in the 70s and 80s, it made sense to say that 5-axis NCs systems that can cut Inconel turboprops for ICBMs should be export controlled; those were multi-million-dollar flagships of the biggest and best manufacturers and were key to the country's military edge. Now you can get one shipped from China for a couple thousand dollars, with servo loop times, encoder and linear scale resolution, memory capacity, processor speed, axis counts, etc. that are better than the originals that cost a thousand times more half a century ago.
Today, it's true that the A100 is a cutting edge, shockingly powerful, uniquely capable processor. You can do machine learning/computer vision projects with it that you can't do with any other technology. Eighty gigabytes! 256 GB/s per package! Almost 20 teraflops of FP32! Compared to the GPU in the desktop you bought 8 years ago, yes, these are huge. But if you plot interconnect bandwidth, memory size, core counts, price, and so on, and extrapolate forward... yeah, your little hobby Kubernetes cluster of 2030-era Raspberry Pi equivalents will probably be at a performance level that's export controlled.