Not sure what "perspective" you are trying to put this in by offering these comparison points between OpenAI and Google. Are you trying to say that OpenAI is more reliable than Google?
For additional perspective, OpenAI has a very small number of highly similar offerings (neural net with API access), while Google has a huge host of very different offerings, from web indexing and search, to email, to file hosting, to video streaming, to cloud compute... etc. Google also has a vastly larger user pool by at least a couple orders of magnitude. Google's core services are extremely solid even at ridiculous scale and have few outages, any of which would be considered major news.
Google also operates all this at a profit, while OpenAI works at a deficit. Google has had to scale larger than nearly any other service while maintaining profitability while OpenAI is more or less free to throw more compute power to solve problems, at any cost, to build valuation. Google has written entire programming languages to help them keep up at an unprecedented scale.
Comparing a single minor Google offering going down to an OpenAI outage isn't a fair comparison to either company. Yes, Google has, by your numbers, about 400 times the number of OpenAI employees. I'd be willing to bet that a single large Google service like YouTube handles more than 400 times the amount of compute, data, and traffic that OpenAI does. I wouldn't draw a comparison between the size and efficacy of the employees, but again, Google operates at a very different scale, and has operated at that scale very well.
Also anecdotally, half the time I've tried to use ChatGPT it's "at capacity" or throws an internal error, and I've also seen Dall-E unavailable even though I've barely tried to use it, so I wouldn't say that OpenAI service has been ironclad this whole time.