Here's the thing: once these become affordable, everyone will be able to be an entrepreneur, and therefore the larger industries will have become obsolete. The current system will provide the technology to let it happen -- and will therefore "plant the seeds of its own destruction", to borrow an old Marxist concept. It just won't happen the way the Marxists think it will.
These larger systems will alter according to the demands set upon them. Materials still have to be created in order for the simplest "entrepreneurial" endeavor. This system has already negated the seed of it's own destruction, corrected it's supposed contradictions, post-industrialized or not. This system has very little in the way opposition, and could realistically function with a continuous stream of homegrown
workers entrepreneurs decentralizing information production into their own homes.
Piece by piece we have already been creating the post-industrial world: individuals can now download and print books; we can download music; we can access all the information in the world from our own fingertips: entrepreneurship has never been easier, and yet it will become even easier yet, the standard of the day by the time we are old men.
Individuals are still beholden to the medium they resort to, to gain whatever it is they need to further their creations. Software, materials, money; very little is actually decentralized that enables people to come out from under the shadow of the older business model. For instance, suffocating copyright laws preventing people from acquiring additional information, lack of funds for upgrading computers, technical knowledge beyond wiki, affordable printing capabilities, etc.
Much of it is an illusion; this libertarian fantasy of decentralized, “power-in-your-hands” scenario. As each new avenue opens, it becomes another way for business to adapt, and there's nothing to say an increase of DYI offers a paradigm shift that endangers industry. Interdependence is the norm; more so in our post industrial society than in the past.