This is my personal opinion and in no way relates to my employment:
I rather think that the courts have enforced the line the legislators endorse, which supports their ends of promoting industry: It's not a mistake of the court system, inventions that apply maths to achieve technical gains are patentable and maths itself remains un-patentable. The courts seem largely to properly discern where that line lies.
Developing maths that saves bandwidth, storage, and energy, for example, is beneficial and countries use the patent system to encourage that.
I rather think that the courts have enforced the line the legislators endorse, which supports their ends of promoting industry: It's not a mistake of the court system, inventions that apply maths to achieve technical gains are patentable and maths itself remains un-patentable. The courts seem largely to properly discern where that line lies.
Developing maths that saves bandwidth, storage, and energy, for example, is beneficial and countries use the patent system to encourage that.