With unlimited budget, I would create a program from the ground up:

1. Setup a scouting network
2. Spend 3 - 6 months shortlisting talents
3. Assemble a team of 10 players + coaches (mental/emotional + technical/gameplay) & analysts (for opponent analysis & meta)
4. If they’re still in school, give them a scholarship
5. Organize small closed tournaments (3-4 teams) 4 times a year, once in each dota region (America, SEA, CN, CIS/WEU). These are more like scrims, but with financial and competitive incentive.