>100 years from now, all the conceivable software is going to exist that could exist, at least for 'business processes.' If your business is selling potatoes as a farmer to distributor, the software you need to participate efficiently in that market will already exist.

I disagree. Unless we're talking about Artificial General Intelligence or some other general purpose technology, I think bespoke software will always be better--if not more cost effective--than off-the-shelf.