What type of visa is suitable for starting a small business in Thailand, and how can I obtain a work permit?

Bosco from Sri Lanka seeks advice on obtaining a suitable visa for starting a small business in Thailand and how to acquire a work permit. The responses suggest that a Business Visa is necessary, and acquiring a work permit requires either working for a company or setting up your own Thai company. It's noted that for every foreign employee, four Thai employees must be hired, and costs for registering a company can range significantly, often requiring legal assistance. Additionally, there are concerns about limited opportunities for foreigners in the Thai small business market.