The issue is with the use of the term 'free', it is vague and often causes more questions than can be truly defined.
I posit, we push forward with the term 'degree' of will, which differentiates the capacities of willpower between individuals, beings and organisms as a whole.
Understanding this concept, we expand on this idea and introduce the aspect of time, which allows us to view the progression of these 'degrees' of will as the 'evolution' of will.
If you understand that at the beginning of the universe, will, defined as an object, entity or agent's ability to carry out tasks, the will of the universe is simply expressed as the progression of the universe since the inception of the big bang. This is to understand that the laws of physics impelled different states of the universe as time passed, until incidentally, the inception of life, abiogenesis.
The universe manifests will as unconscious life existing and evolving, through the laws of physics and time until consciousness and will was conceptualised? and acted upon.
Life evolved and will evolved with it, in regards to humans, the development of a more powerful brain and hands has propelled the quality of lives immensely through this expanded will.
The collective will of humanity has grown as humanity has progressed with learning and technology.
If you assume that humanity continues to exist AND will continues to grow with the capacity of humans, the limit is now where we define 'free' will. Free, as defined as exceeding all constraints. discarding compatibalist defintions of 'free', we reach the ineffable concept of Godhood.
I end my essay here because to explain or even attempt to understand the greatest reaches of human efforts in the far future are too daunting to even begin. I make the argument that 'degrees' of will allows for the implication of 'free' will insofar as describing humanity's ascent to God.