Sure, on a normal computer that may be the case. But, products like the Kemper Profiling Amp (<a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=h0SmSl1aS1w" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=h0SmSl1aS1w</a>) are on the same price range as high-end amps and have been able able to model _any_ amp with an incredible precision for years already. Still, it&#x27;s easier to find a wide selection of analog amps in recording studios than one of those. 
That said, I think it has a lot to do with the guitar player &quot;fetish&quot; of recording on a boutique valve head with a pair of 4x12 cabinets.