Something I haven't seen mentioned in this thread or TFA is just how high corporate taxes were (and even personal investment taxes) in the 50s and 60s, and this

Something I haven't seen mentioned in this thread or TFA is just how high corporate taxes were (and even personal investment taxes) in the 50s and 60s, and this influenced spending on R&D immensely because that investment wasn't considered taxable income. Tax rates were over 50% for much of the era of Bell Labs and Xerox PARC.