Unfortunately, investments by former CEO Rex Tillerson simply havenaEURtmt borne as much fruit as hoped for, including a $31 billion purchase of XTO Energy that has yet to pay off, breeding skepticism. The companyaEURtms recently unveiled plans to more than double earnings by 2025 were met with sneers, and Exxon even had to scrap some joint ventures with RussiaaEURtms Rosneft because of American sanctions.