There are a couple factors that play into future-planning. The first, and most important factor is that most people neither care what OS their hardware uses or actually need more than the barest baseline. They want to spend time with their friends doing the things their friends are doing.
This is what has allowed Android to gain such massive prominence in the mobile space. It’s all that’s needed to play crap web games, listen to music, watch videos, and commune on social media. Expect more and more consumer hardware to be ARM-based devices running Android for the next few years.
The next big factor is that Linux has become a sort of driver dumping ground for reputable hardware manufacturers. Want to sell a piece of hardware? Better make damn sure it’s got Linux driver support so that it can be part of an Android device. This means that more manufacturers are contributing drivers and code to the rest of Linux. It doesn’t necessarily mean that code that works with Linux is going to be open source or play well with others. nvidia has proven to be an absolute bastard in this regard.
I don’t think that means the future for Linux is going to be dim. I do think we need to expect and plan for more corporate presence. Some of that presence will be good. It doesn’t take much to be a good member of the community. However, we do need to keep our collective eyes out for nvidia-like presences that will only serve to anchor everyone else down.
Where I’d personally LIKE to see Linux going is to provide more power to older hardware. We have a wealth of hardware that’s in the 10-20 year-old range that can be doing useful work. The problem there is maintainership. It’s harder to get volunteers to work with older hardware. If you can get people to work on supporting that hardware, it means fewer PCBs in landfills and more doing hobbyist or scientific work.
In the ‘modern’ Desktop Linux space, I’d like to see a renewed focus on privacy. I’d like to see privacy features baked into the kernel alongside security features. In a lot of cases those are the same feature.