It's a common problem for software giants that made their fortunes in the days of shrinkwrapped boxes -- how do you adopt your business model to today's download-heavy market? Adobe seems to have found the solution with Creative Cloud, a SaaS-based bundle of their many design and production technologies, which they are now offering on a subscription basis. But subscription pricing can be tricky. Adobe was able to offer a price point of $50/month when it had…...