Do you usually acquire reporting scripts with rights to the source code?

I have already tried to do my own research and believe that in this case my colleagues at the time are at least partly responsible:

The point is, we use the QlikView software to analyze data in purchasing. Now we want to migrate to the next level, QlikSense.

At the time, we purchased two reporting dashboards/scripts from external service providers, in this case, a freelance consultant, which required minor customization. He charged mid-four-figure sums for each script. There was no detailed offer or even a purchase agreement specifying whether we would receive access to the source code with the payment. Now, four years later, we've discovered that the code is password-protected.

We asked the consultant to give us the password or remove the protection so that we can now use it in QlikSense.

His answer is no, we bought the scripts "as is," without the right to use them in applications other than QlikView. If we wanted access to the source code, he would gladly give it to us, but this time for double the amount.

I don't think there's any clear case law on this (we're talking about scripts/dashboards here, not the source code of original software), so as far as I can see, it's our bad luck that the colleagues (who are no longer there) who bought it didn't think to demand this and to stipulate it in the contract.

Am I seeing this correctly, or does someone else here know it?

Thanks!