To better @Jolla 's financial situation I suggest (repeatedly) to set up a subscription model. 50 for the licence and 25 per update is it worth and would bring steady income for Jolla.
Or create a premium subscription model with some additional service, like e.g. remote maintenance or remote system monitoring/debugging. This would also improve Jolla’s ability to find bugs and solve problems not only under laboratory / testing conditions but in real life situations.