I can understand the concern about getting your account banned, but: if after 12 months, your startup can't afford $250/month for support, you probably have bigger problems.
To put it another way: do you think the level of support that Google would be able to provide is less valuable than a few percent of an engineer's salary?
Google support seems to charge per person, so suppose you are a few persons, ie at least 3 sharing the support then it's $750/month. Also, you are assuming US salaries, when looking at many other countries $250 is upwards 10% of the salary. Google support is valuable, but, going with AWS for example is a lot cheaper. Now, if you are a VC-backed or otherwise funded company, then this is a non-issue, but there are hundreds of thousands of businesses that have a total spend on infra that would be less than the support fee from Google.
To put it another way: do you think the level of support that Google would be able to provide is less valuable than a few percent of an engineer's salary?