This is also my thought I don't think that using an individual as a third party in a business is good but making use of a trusted platform like fivverr and up work would really guarantee a smooth freelancing job and delivery.The truth is there is no measure the writer can take to get paid from the person he sent the job to. So far it's freelancing and remote job you just have to be careful with those giving you writing gig to do. Better still register or create an account with freelancing website, they serve as third party between freelancer and those giving out jobs. With this it will be easy to get your money after getting the job done