They literally cannot unless phones begin defying the laws of physics.
Agreed
Device convergence died in the early 2000s. We had aspirations of one device to rule them all. One device that was a work and personal phone, a phone that could be plugged in to a docking station and used as a converged productivity machine.
Here we are in 2021 and I am looking at two phones, a home computer, work laptop and 2 tablets. The only convergence I am seeing right now is I typically try and squeeze them in one bag!
We may aspire to one device but I doubt it will ever fully happen because of the last 1% - That last 1% of performance that constitutes the vast proportion of the cost.
The laws of physics are a large proponent to this belief of course. Diminishing returns or exponential cost increase to eek out that last drop of excellence.
Imagine an iphone that takes pictures better than a Hasselblad in any situation, an iphone that has a better screen than an imax theatre and reference quality speakers on it that would make Dr Dre weep, shipping with the absolute best in audiophile earbuds - we wouldn't pay the premium they would have to charge to make it economically viable.
For the absolute best solution for everything and we wouldn't pay money for the best of things we dont need. If I dont care about a camera but I do care about sound quality as an example, why would I pay more for a device that excels at something I don't care about when I can spend that money on something that excels at what I need/want it to.
Also, I think devices that are good enough at a number of things will always be acceptable to the masses but for those needing to get the absolute best for a particular task, then something designed and built for THAT purpose with little expense spared, will still have a specialist market. Look at a supercar, on paper it doesn't do anything that a more mundane option can do, it just does it easier, faster, quicker so no matter how good a BMW M5 is or an Audi RS6 is, for those who care about driver pleasure and performance, there will always be those wanting a Ferrari - but they pay a premium to get 3.4s 0-60mph over the i3 that does it in 6s
Except for commodity electronics like camcorders and voice recorders, VHS/Betamax DVD/Bluray, cassettes/Minidisc where technology has moved on meaning they are not differentiated enough to warrant a dedicated consumer offering anymore.
The much discussed Voice Recorder for example, star of this thread if you wish, if you are recording for reference later, then the quality of the audio is not the primary consideration - so an app on the phone is adequate to allow capture and easy access later - arguably easier access than if it were on tapes. Also with the help of connectivity, then the workflow to publishing, transcribing or the securing of it incase your device fails is easier. So actually the phone app is better than the device up to the point where actually, you are recording music or voice audio as a talking book - whereby the quality of the audio demands the use of a specialist device/solution to ensure the absolute best outcome.
What was my point? dunno.... sorry...