I hear investors pose this question often, but I can only speak from experience. In the past, I have noticed most agents will not pull the trigger on good opportunities. However, I cannot say the same for property management companies. @Jason Tressler touches on a solid point that unless you are a REIT, hedge fund, or syndicator most times we all face the same problem... we run out of capital.
That said, to address your first question I do not necessarily believe having a team that also invests is a major problem. Each party will have varying investing criteria.
Secondly, I have noticed investors wiling to share contacts with others who are interested in the same area or utilizing the same team for a number of reasons:
1.) At one point or another that person who is sharing was "new" to the game and is willing to pay it forward to the next person. Believe it or not, I have seen this happen many times before and continue to see it today.
2.) Investors who have had a bad experience with vendor(s) like to share with friends, family, or fellow investors so that they do not run into the same troubles. The same can be said about having a good experience. Again, speaking from experience, but usually when investors refer others to a particular vendor they do like... it further develops the relationship with that vendor.
Keep in mind that at the end of the day real estate is competitive, but there are more than enough deals to go around. Good luck!
Cheers,
Zach