Before revision:  Generalist communities can resist becoming specialists, despite the invasion fitness of specialization  (2) Generalist and specialists can both resist cheaters despite the invasion fitness of free-riding . (3) Multiple community structures can coexist despite the opposing force of competitive exclusion.
After revision:  Generalist communities can resist becoming specialists, despite the invasion fitness of specialization (2) Generalist and specialists can both resist cheaters despite the invasion fitness of free-riding , (3) Multiple community structures can coexist despite the opposing force of competitive exclusion.