I remember a similar topic cropping up over 30 years ago at accordion clubs in Scotland.
Round about that time electronic accordions were starting to make their mark as venues were cutting their costs for entertainment. For those of us who decided to make a living out of playing we HAD to adapt and beef up our sound or we were left behind.
I had one of those cordovox like accordions with superb bass and rhythm units built in. In 1984 I bought one of the first accordions with built in midi in my area. It caused quite a stir and opened up new horizons. I teamed up with a drummer a few years later and he had a technics KN5000 keyboard. I had that midid up to my accordion. Well, the sound we had built up was incredible for that time. We had our own library of tunes built up and saved on a standard floppy disk which we built up using cakewalk and an atari computer.
If I was on the circuit today, I would certainly use band in a box on a laptop. Sometimes live bands are asked for especially in accordion clubs and Scottish dancemusic events.