Having cut my teeth on VM/CMS, I really appreciate the crystallized wisdom in "there really is no 'new' idea in computer science that IBM wasn't doing in the 70

Having cut my teeth on VM/CMS, I really appreciate the crystallized wisdom in "there really is no 'new' idea in computer science that IBM wasn't doing in the 70s" - though I'd simplify it to "there really is no 'new' idea in computer science that wasn't implemented in the 70s." Not every innovation happened at IBM first back in those days, any more than they happened at Microsoft first in the '90s, even if IBM (and Microsoft) were more successful at capitalizing on the innovations of others due to the advantage of being well-capitalized second movers.