Yes, as long as the business communicates and executes well and makes the value proposition of the choice clear to their customers, either works. Being backward

Yes, as long as the business communicates and executes well and makes the value proposition of the choice clear to their customers, either works. Being backwards-compatible to the beginning of time is not the only choice. My experience in the industry, however, is that most organizations cling to never breaking compatibility, under the flawed belief that it's always simpler or cheaper than planned migrations.