What about if one country wants to highen their standards in a certain area, will all the countries that signed up then immediately have to follow? Won't the ot

What about if one country wants to highen their standards in a certain area, will all the countries that signed up then immediately have to follow? Won't the other countries bully the first one to stay to the status quo? Also, are there really always such a thing as 'highest standard'? Couldn't it be that more often than not, the rules aim for opposing values?