Yes, many companies even start with hobbyist tools. IBM proves that going all B2B is not a good idea. The other end of the problem is Apple which is a consumer

Yes, many companies even start with hobbyist tools. IBM proves that going all B2B is not a good idea. The other end of the problem is Apple which is a consumer company, but they prohibit companies to use their hardware for building new things. Both approaches suck for consumers and/or startups, but Apple's approach at least works for them from a business perspective.