Vendor lock in and MySQL documentation

Part of the sales pitch for MySQL is that there is less risk of vendor lock in. This is repeated frequently on their marketing here, here, here and here. The explanation is that the source code for MySQL is available with a GPL license and if you are unhappy with MySQL the company you can continue using MySQL the product and get support elsewhere.

Documentatation does not have a similar license. You can decide whether this creates the risk of vendor lock in. Details are here.

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Isn't it in the best interests of Sun/MySQL to address this issue and reassure potential customers?

Arjen, Sheeri, Baron and the lead for the MySQL docs team have also written about this.