if only the basic features are open source and advance features (but necessary) need to be purchased ,then what is the point? it is better to just buy the bett

if only the basic features are open source and advance features (but necessary) need to be purchased ,then what is the point? it is better to just buy the better one since you will need to pay anyway. Don't let "open source" fool you, if there is a "pricing" page on their official page, run. If you're going to buy it, just buy from market leader.