Genuine question

Genuine question with these tech pauses happening frequently what are like the main reasons for these tech pauses? like aren't they set to play with the best gear and they have no problems with the Internet since it's LAN I mean if there is a problem with a players mouse or gear I would understand but tech pauses always happens, I doubt the players gear are always broken, what are main reasons for these tech pauses?

imagine working on the biggest event of the year and having tech pauses every single match

iv been thinking the same lol