The marginal price for producing a video is practically nothing, with most of the world's population carrying around video equipment in a cell phone that outperforms what a video production company would have used decades ago, after spending the equivalent of several years wages to procure. The effect has been a rapidly rising video industry on the likes of YouTube and TikTok, majorly upsetting the entrenched video production houses from decades ago, and creating significant job losses for those companies, but growing the industry as a whole.
Having similarly marginal costs to software production will likely have a similar effect, where directing what to do with the software will become more important than the writing of the software itself, and individuals in their free time will be competitive against industry giants.
The real driving factor is support, and open source tends to be very extractive when it comes to support, leading to burn-out and dead projects.
The reason Intuit and others can maintain a monopoly on the particular software they've created (and not lose it to LLM generated or open source clones) is that they have support that won't disappear on a whim, probably.
I understand how as someone wishing to make money this may be undesirable. But I think it is worth considering the bigger picture of what a high-cost life vs a low-cost life looks like for us as individuals, and as a society.