What do think is needed for Linux to take off with the mainstream computer audience?

Lots of people online always seem to pile on Windows, especially recently but despite that Linux market share is still pretty small. There are legitimate use cases for sticking on Windows, like certain software just not working at all under Wine, or games that rely on anti-cheat. But what about your mainstream computer user? The one that essentially just uses a browser and then maybe plays some casual games, why don't they just Linux?

I guess another way to orient the question is: How and why do you think Chromebooks had any success in the market at all but not most Linux laptops (in the sense recognized by most)?

To kick off the discussion I'll share my own thoughts, feel free to correct me, give your own opinions in relation to this, or just bounce off them:

I think obvious answer as to why Chromebooks had any success is because they're cheap and actually sold in stores. And as for why that even happened probably boils down to development costs. OEMs seem to really hate investing human capital on stuff like firmware/software (probably why most preinstalled software sucks) and probably also employee training on brand new technologies.

Google seems to have solved this by using a reference board/platform -> finished product flow. They develop most of the actual firmware in tandem with hardware for use with their own OS and hand that over to OEMs, which is probably very convincing for them. Google is essentially the exclusive software/firmware maintainer while OEMs can just handle sales and some technical support (though I imagine most inquiries are probably just forwarded to Google).

It's one approach to break into the market but it's not entirely necessary as the Legion Go S SteamOS and Windows version are seemingly identical other than the shell and Steam button? But Valve was likely extremely involved and made sure to tune SteamOS to work great on the Go S, kind of the same as how Google handles software on Chromebooks.

But going back to the Google approach, if a Linux distro created reference board designs like how Google does, is it likely to actually change anything? There is the problem of the major Linux distros probably having very little hardware engineers since they almost exclusively handle firmware/software and I don't imagine an established Linux hardware maker like System76 or Framework would just make a design for this as that would create direct competition against them. But assuming a distro did have the engineering talent, would any of them (other than Ubuntu probably) have the capacity to handle the role of tech support? And if that was also true, would they even be a success on the market?

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