Natakim I think you’re correct, many people either don’t have a computer or have a cheap laptop.
I’m definitely in the minority amongst people I know in having a desktop, a laptop, a iPad and a couple of phones (1 main and 1 for travel). Updating each type of device is becoming very expensive and I have to admit I’m looking at ways to shrink my device count.
That’s one reason why I’m reluctant to shell out $2049 for a 256Gb iPhone XS max (or even $1879 for a 256Gb XS).
One way to shrink my device count would be a dual SIM iPhone (which would mean I could get rid of the dual SIM Samsung I only use when travelling) then I could roam on my Australian SIM and put in a local SIM when I’m overseas (which is about 4 months per year) but the true dual SIM iPhone is China only and it seems that the eSim isn’t going to be supported by Optus (or Telstra or Vodafone) in the iPhone (only in the Apple watch in combination with a conventional SIM in the phone).
The iPad Pro still isn’t there as a power user laptop replacement IMHO, there are still apps I use on a regular basis that don’t have good alternatives in OS X.
The perfect phone for me would be the Chinese dual SIM version of the iPhone Xr 128Gb (which means grey market if it’s even possible sigh).