I think the differences will be stark and obvious to those who remember the world pre-convergence. But a new generation will not know the differences, nor will they care.
For my parents' generation, TVs were a big deal. For me, I can hardly distinguish between a TV and a Radio and a Microwave and a Washer/Dryer -- they all have existed as long as I remember. But I can definitely tell the difference between an app written against User32/GDI/WinForms/VB versus one that uses the Android toolkit versus one in GTK+.
There's been a lot of work over the years to make most applications agnostic to the underlying toolkit and OS, including React Native, Flutter, Unity, Adobe Animate (formerly Macromedia Flash), and so forth.
For my parents' generation, TVs were a big deal. For me, I can hardly distinguish between a TV and a Radio and a Microwave and a Washer/Dryer -- they all have existed as long as I remember. But I can definitely tell the difference between an app written against User32/GDI/WinForms/VB versus one that uses the Android toolkit versus one in GTK+.
There's been a lot of work over the years to make most applications agnostic to the underlying toolkit and OS, including React Native, Flutter, Unity, Adobe Animate (formerly Macromedia Flash), and so forth.