Can a domain name be only consisted of the type of business and the city name?

Hi guys, I hope somebody can answer this.

So, basically, my wife's father has a small business selling industrial gas to small to middle sized costumers and doesn't have a website, only Google my Business. But since this is an industry where brand recognition doesn't mean a lot to customers, we thought it would be best if the domain doesn't include the business' name but rather a combination of the business type and a the city it resides in (broad example: technicalgaschicago.com).

My question is whether Google doesn't treat this as some kind of a cheating considering he would only use this single website and Google my Business. Thank You!