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Hello and welcome! My name is ***** ***** I am a licensed attorney who will try my very best to help with your situation or get you to someone who can. There may be a slight delay in my responses as I research statutes or ordinances and type out an answer or reply, but rest assured, I am working on your question.
Unfortunately, if the landlord chose to rent to other tenants who were engaged in lawful businesses, and it negatively affected yours, that wouldn't give you grounds to hold them liable for any lost business. The landlord has a legal duty to provide a property that meets all applicable building and safety codes, but that is about it. They don't have a duty to only rent to tenants who would help or complement your business...
If someone threatened you or caused some safety issue, only that person can be held liable because the landlord is not liable for the unlawful actions of a third party..
I am very sorry that I don’t have better news, but please understand that I do have an ethical and professional obligation to provide customers with legally correct answers based on my knowledge and experience, even when I know the answer doesn’t make the customer happy...