How do I motivate pursuing a PhD in Computer Science (CS) after a BSc in CS and MBA in Finance I've developed a strong urge to pursue CS again to deepen my understanding of specific fields of interest while contributing in high-tech and R&amp;D industry. I graduated with 3.0 and 3.7 GPA in a BSc in CS and MBA in '12 and '17. I've 6 years of experience as a software developer and manager unfortunately none of my work was research oriented. From the research I've conducted most entry requirements prefer applicants to master computer science as it's most ideal but a 2nd master's degree (in CS) is rather deterrent from a time and financial perspective. Has anyone had success getting into a decent PhD in CS with this sort of combination?
You're an excellent candidate for a PhD in Computer Science: You have a BSc in the subject, you have six years of industry experience, and you've developed a strong urge to pursue CS again to deepen [your] understanding of specific fields of interest while contributing in high-tech and R&amp;D industry. (A desire to deepen your knowledge isn't enough, you need to be truly passionate about contributing in high-tech and R&amp;D industry. I presume you are.) Your MBA gives you business know-how that'll focus your attention towards research problems that'll have real impact on society.

From the research I've conducted most entry requirements prefer applicants to master computer science as it's most ideal but a 2nd master's degree (in CS) is rather deterrent from a time and financial perspective.

Entry requirements are tailored towards the average entrant, which, I'll speculate, is someone that's never left university. You aren't an average applicant. You can confirm my theory by calling some admission departments. Thereafter, identify supervisors that pursue research that impacts technology. Pitch yourself to them, explain how your skill set will advance them. Establish whether they can help you on your pursuit.