Linux, Open Source and the Organisation

How does proprietary software support these needs?

Vendors make changes to maintain revenue streams
- As well as for genuine technological reasons
- Vendor provides migration tools and strategies
If you need an enhancement, the vendor will probably do it, if you pay enough...
It may be difficult and expensive to switch to another vendor
Your data is safe provided
- The vendor stays in business
- You can afford the upgrades and migration tools