Both are hard for startups to take on. The former because many of the founders are heavily focused on a technology they came up with and attempt to shoehorn it into products that don't quite make sense. The latter because it requires either very patient investors or a big bank account.
Both are also hard for established, mature companies to take on. The former because they seem to believe that innovation for innovations sake is a useful thing to do, and for whatever reason the tech press seems to encourage them. The latter because they are focused on delivering quarterly results over building long term platform and ecosystem value, and because politically a cancelled project can be career ending.