An A380 is already full of screens where touch input could be introduced. All major airplane manufacturers are definitely experimenting with touch screens in the cockpit [1]. I guess not for flight critical systems for different reasons, because of missing tactile feedback and limited usage during turbulent flights [2]. But maybe that's just a question of time...

[1] https://www.flightglobal.com/news/articles/airbus-aims-for-a... [2] https://aviation.stackexchange.com/questions/22729/why-are-t...