It seems to me that the Charaidi world is more focused on building and growing. The population is growing fast and the needs in terms of living, both physically and spiritually, are pressing. The scarce resources may be allocated where they are more strategic. To hire one Rebbe for a class may effect 25 students positively. At the same time that salary could be paid for a Kiruv person who will probably influence less people for less time.
I’m not saying that outreach is not important, but one can say that you get more bang for the buck investing in the existing Charaidi system.