How do you factor in possible technological advancements that could render a company's business model obsolete? For example, if someone develops a distributed

How do you factor in possible technological advancements that could render a company's business model obsolete? For example, if someone develops a distributed web-of-trust/payment platform, a lot of the value of Uber and Airbnb goes away. The basic model behind some of these sharing companies can be factored out into (network effects + domain knowledge + web of trust) = profitable monopoly. You can adjust how valuable you consider each of these, but to me it seems like most of the value isn't in the domain knowledge area. What if someone figures out a way to not have all of the value captured by a monolithic entity?