it's extremely difficult and often impossible to maintain your concentration for any useful amount of turns at all.
That's not a problem if you know how to do it. Never had problem with concentration as a way to break buffs, keeping up concentration is easy.
The problem is how it makes lots of concentration spells bad apart from edge cases because you just can't use them without concentration slot if you will and it's just not worth it.
(some classes are especially plagued by concentration spells)
Second problem is in a video game format you do not have active DM that can change things on the fly, to make those edge cases for you. In a video game you always gonna use what works most of the time.
It's like having that special hammer for that off one chance that you will need it but you never do. So you end up draging that hammer with you through entire game all along looking at it, hoping to use it! But that time just never comes.
As i said it works in table top in a video game we just have better ways of doing the same thing.
