ODbL / DbCL licenses: not DFSG compliant?
are the Open Database License (ODbL)  and Database Contents License (DbCL) DSFG  compliant? It seems they are not, but I would like to make sure.
Specifically I found an earlier thread  where it was argued that section 4.6 of the ODbL  makes it non-compliant (I presume with DSFG 1), as this section reads:
"Access to Derivative Databases. If You Publicly Use a Derivative Database or a Produced Work from a Derivative Database, You must also offer to recipients of the Derivative Database or Produced Work a copy in a machine readable form of:
a. The entire Derivative Database; or
b. A file containing all of the alterations made to the Database or the method of making the alterations to the Database (such as an algorithm), including any additional Contents, that make up all the differences between the Database and the Derivative Database.
The Derivative Database (under a.) or alteration file (under b.) must be available at no more than a reasonable production cost for physical distributions and free of charge if distributed over the internet."
which would restrict people from selling a Derivative Database or Produced Work for significant (higher than reasonable production) cost.
Is that a reasonable interpretation?
Thanks for your consideration,