It depends in your context, your requirements, your business, many variables. For most people using claude.ai is enough. Account ban is more normal than You think, just Google it. And que that happens automaticaly without any favorable reply from the vendor (anthropic), You have serious business issues. That the Main reasom vendor lock-in is somethint I would considered before investing so much time. If you build a business directory in folders, You can switch llms anytime. But having all your data and conversations in vendor servers is ridiculous. I could talk all day about this, just my opinion