Most giant car manufacturing companies, like Toyota, still prefer to manufacture cars with combustion engines (ICE cars) or hybrid cars because these cars need constant service and spare parts. One ICE car will generate at least 20 years of cash flow for these companies (in some regions, it's 20-35 years). If they stop producing ICE cars and shift to EVs, it will not generate cash like ICE cars (EVs have no moving parts and require less service). Thus, these market leaders are not foolish enough to cut their cash trees.
All major market leaders are capable of manufacturing EVs, but they will not move to mass production until they see a significant market shift (people still prefer ICE cars due to range and charging time issues).
However, China is slowly capturing the EV market and continuously improving battery technology. Within the next two years, China is expected to overcome the range and charging time barriers (with some EVs already surpassing 1000 km per single charge).
Toyota is still trying to invent a hydrogen car because it functions similarly to an ICE car and offers long-term benefits after the sale. However, hydrogen-to-electricity energy consumption is higher, making direct battery EVs cheaper than hydrogen cars. Therefore, hydrogen cars will not be viable in the future unless new low-cost technology is invented.