No equivalence. Pretty much any pro-quality electric guitar made in the last 70 years could be used in place of any other pro-quality guitar. Old ones are often

No equivalence. Pretty much any pro-quality electric guitar made in the last 70 years could be used in place of any other pro-quality guitar. Old ones are often even better than new ones, and most well-made guitars age like fine wine. The same is not true with computers. You and I have almost zero chance getting a good job by programming on an artisan or otherwise Apple ][ or TRS-80.