The core concept here is to understand the implications of a 'guild-like' ownership structure. The correct answer is C because 'guild-like' typically refers to a structure that is exclusive and restrictive, limiting the entry of non-members. Option A is incorrect because it suggests the opposite of what 'guild-like' implies. Option B is incorrect because while guilds may have a hierarchical structure, the question is specifically about restrictiveness. Option D is incorrect because a guild-like structure usually does not encourage cross-field collaboration but rather maintains the status quo within the profession.